Concrete Curing Time

Waiting for the curing of concrete can easily test patience, especially when you’re ready to move on to the next step of a project. However, it’s important to remember that quality is the end goal, not quickness. Rushing ahead and not allowing enough time for concrete to properly cure before allowing foot traffic or heavy machinery to travel across your newly placed cement can seriously compromise the integrity of a concrete slab.

 

Cement Curing Factors

Several factors influence concrete slab cure time, including:

 

Typical Concrete Setting Time

Typically, concrete is recognized to have reached full strength 28 days after placement; however, this does not mean you need to wait 28 days to walk, or even continue construction on newly placed concrete. After placement, concrete increases in strength very quickly for 3-7 days, then gradually for the next 3 weeks. This means that concrete hardening time is typically 24-48 hours, at which point it’s safe for normal foot traffic. After one week, concrete is typically cured enough to handle continued construction including heavy machinery.

The “70 in 7” Rule

When in doubt, remember the “70 in 7” rule: Most concrete mixes will have reached 70% of specified compressive strength after 7 days. At this point, it’s ready for exposure to normal traffic.

Concrete Curing Blankets

Unfortunately, cold weather during winter months can seriously slow down concrete cure time and significantly hold up construction projects. Luckily, solutions, such as concrete curing blankets that maintain optimum temperatures during cure time, are available. Concrete Blankets are an effective option that cure concrete 2.8 times faster than a typical insulated blanket and properly maintain moisture throughout the hydrating process. Concrete Blankets are easily transported and installed and maintain ACI compliance for cold-weather concreting. If you’re looking for a solution to maintaining optimum concrete cure time during cold winter

Powerblanket Receives the AME Award

Powerblanket Receives The Association for Manufacturing Excellence Award

The Association for Manufacturing Excellence (AME) today announced four recipients of the AME 2017 Excellence Award. The AME Excellence Award primarily recognizes North American manufacturing plants that have demonstrated excellence in manufacturing and business. The award acknowledges continuous improvement, best practices, creativity and innovation. Recognized among those four recipients is Powerblanket, the smallest company ever to receive this award.

Powerblanket – Salt Lake City, Utah

The leader in total temperature control, Powerblanket designs and manufactures high technology smart controls and monitoring devices, heating blankets, and chilling products that solve a wide range of temperature problems in industries such as oil and gas, construction, industrial, mining, and railroad. The AME assessment team highlighted Powerblanket’s great culture throughout the company. The team also commended Powerblanket’s improvements and impressive turnaround, especially for only being three years into its lean journey. The award presentation will take place on Oct. 25, 2017.

How It All Started

Powerblanket is a great example of problem solving and innovation in industry. A concrete worker in Salt Lake City, UT wanted to work more efficiently year-round. He worked with an engineering professor at the University of Utah to create an efficient heating technology that would cure concrete quickly and with maximum strength. They developed an innovative concrete heating product and founded Powerblanket, which soon became a leading manufacturer in the concrete industry.  This technology proved to solve many temperature problems for applications across many different industries, and they began wrapping barrels, buckets, pipes, and tanks. From there they developed an expertise in temperature control, built a world-class custom design team, created control devices, and entered the industrial cooling industry with a new line of chillers and cooling blankets.

What started as a solution to a common constructi

on problem, has turned into an industry-leading company that engineers and manufactures temperature control solutions for many different industries all over the world.

More About the AME Award

The AME Excellence Award has a rigorous selection process that begins when a company submits an extensive achievement report based on the AME Excellence Award evaluation criteria. Achievement reports are evaluated by the AME award assessment team. For companies that score high enough in this achievement report review, an intensive site visit is completed, during which a volunteer team of manufacturing practitioners validates the submitted achievement report. Recipients of the Excellence Award are selected based on the combined results of the achievement report review and site visit feedback.

The AME Excellence Award is not something that can be achieved by one person or one company leader. It takes all team members working together to achieve the level of enterprise excellence that the AME Excellence Award recognizes. With that in mind, AME representatives will visit award recipients’ facilities to present awards in person so that everyone working in these facilities can participate in the celebration.

Recipients will also be honored at the AME 2017 International Conference, taking place Oct. 9-13 in Boston, Mass. Recipients will share their best practices with other lean and continuous improvement practitioners in attendance.  

To learn more about the Excellence Award and the 2017 recipients, visit www.ame.org/excellence-awards.

How Cold is Too Cold to Pour Concrete?

What Temperature is Too Cold to Pour Concrete?

Experts agree that the best temperature to pour concrete is between 50-60 °F. The necessary chemical reactions that set and strengthen concrete slow significantly below 50 °F and are almost non-existent below 40 °F. Even when daytime temperatures are within the satisfactory range, winter concrete setting creates risks that could result in weak, inadequate concrete. If nighttime temperatures are below freezing, the water in the concrete will freeze and expand, causing cracks. Additionally, if temperatures reach below 40 °F (but not freezing) during set time, concrete will take much longer to reach required strength. However, if the correct measures are taken, concrete can still be successfully placed during even the coldest months of the year.

Things to Consider with Cold Weather Concreting

Before embarking on a cold weather concrete project, it’s important to determine any special strength requirements or considerations. This will help as you schedule your pouring and determine which strategies you will use to keep your surroundings and materials warm. The predominant challenge you will face during a winter concrete project is ensuring that the concrete sets before it is exposed to freezing temperatures. You might take the following suggestions into consideration as you plan your upcoming project:

  • Use heaters to thaw frozen ground, snow or ice.
  • Use hot water to mix cement.
  • Keep dry materials in a dry, warm location.
  • Use products designed to set quickly. During cold weather, these products will not set as quickly as the instructions may indicate, but will set faster than conventional materials.
  • Use additives that accelerate set time. Use caution; if additives contain calcium chloride, any rebar or metal wire mesh in concrete will rust and cause concrete to crack.
  • Use extra cement (typically 100 lb/ cubic yard) to make the reaction hotter and cause concrete to hydrate more rapidly.
  • Remember that you still need to wait for bleed water to evaporate. Incorporating the water into the surface during finishing will weaken the surface. Bleeding starts later and takes longer during cold weather; you can use squeegees or a vacuum to remove water quickly.
  • Wait until concrete has reached desired strength to remove any framework. If the framework is removed too early, the concrete will be damaged and the surface could collapse.

Maintaining Ideal Temperature

After implementing the above suggestions, It’s important to consider how you will keep concrete at the correct temperature during the curing process. Concrete must maintain a temperature above 50 °F for approximately 48 hours for the correct chemical reactions to take place. Two popular options used during cold weather concrete curing are heated enclosures and insulated blankets. If using an enclosure, ensure that the structure is both wind and waterproof. Additionally, ensure that there is proper ventilation for the space heater. Heaters cause an increase in carbon dioxide that could cause carbonation in the surface of the concrete.

Powerblanket Concrete Blankets

Powerblanket® concrete blankets are an extremely effective option for attaining and maintaining the correct temperatures for concrete pouring and setting. Powerblanket® concrete blankets can be used to thaw ground before pouring concrete and again after finishing to keep concrete from freezing. Utilizing Powerblanket® concrete blankets will ensure that concrete is kept at the correct temperature for the necessary reactions to happen quickly and the desired strength to be reached.

Heat Authority Sells Powerblanket

Find Powerblanket Products at Heat AuthorityHeat Authority

Heat Authority has researched the leading products for industrial and job-site productivity and offers the widest variety of heating and cooling accessories to make working in any environment easier and more efficient. Cold weather got you stuck? Unfavorable warehouse conditions? Hazardous area environment? Construction site issues? Need better equipment to get the job done? Heat Authority has a product to help solve your problem.

Heat Authority Has It All

With products for almost any industrial application, Heat Authority is one of the very best resources for industrial equipment supply. With a low price promise and FREE shipping on almost every product site-wide, Heat Authority offers heated concrete curing and ground thawing blankets, drum and IBC tote heated jackets, hot plates, furnaces, lighting, machinery, welders & generators, including freeze protection products and warehouse lighting solutions. Construction contractors and utility excavators rely on the light towers heated construction blankets. Warehouse managers and manufacturers demand the drum & tote heaters. Concrete finishers require the concrete curing heated blankets to keep their crews working all winter long.  Everybody loves the low price guarantee on EVERY product site-wide. Heat Authority knows that time is money and do their best to help their customers save money & stay on schedule all season long.

Great Distributor

Distributors like Heat Authority are vital to the success of Powerblanket, and we appreciate and value these partners for all they do to help us deliver heating solutions all over the world. If you are in search of Powerblanket heating solutions, Heat Authority is a trusted and reliable source.

Powerblanket Heating Solutions at Heat Authority Include:

  • Bucket Heaters
  • Tote Heaters
  • Barrel/Drum Heaters
  • Concrete Curing Blankets
  • Bulk Material Warmers
  • Propane Tank Heaters
  • Pipe Warmers
  • Ground Thawing Blankets
  • Spray Foam Heaters
  • Hot Boxes
  • DEF Tote Heaters
  • Tank Heaters

 

What Temperature is Too Cold to Pour Concrete?

What Temperature is Too Cold to Pour Concrete?
What Temperature is Too Cold to Pour Concrete?

What Temperature is Too Cold to Pour Concrete?

Experts agree that the best temperature to pour concrete is between 50-60 °F. The necessary chemical reactions that set and strengthen concrete slow significantly below 50 °F and are almost non-existent below 40 °F. Even when daytime temperatures are within the satisfactory range, winter concrete setting creates risks that could result in weak, inadequate concrete. If nighttime temperatures are below freezing, the water in the concrete will freeze and expand, causing cracks. Additionally, if temperatures reach below 40 °F (but not freezing) during set time, concrete will take much longer to reach required strength. However, if the correct measures are taken, concrete can still be successfully placed during even the coldest months of the year.

Before embarking on a cold weather concrete project, it’s important to determine any special strength requirements or considerations. This will help as you schedule your pouring and determine which strategies you will use to keep your surroundings and materials warm. The predominant challenge you will face during a winter concrete project is ensuring that the concrete sets before it is exposed to freezing temperatures. You might take the following suggestions into consideration as you plan your upcoming project:

  • Use heaters to thaw frozen ground, snow or ice.
  • Use hot water to mix cement.
  • Keep dry materials in a dry, warm location.
  • Use products designed to set quickly. During cold weather, these products will not set as quickly as the instructions may indicate, but will set faster than conventional materials.
  • Use additives that accelerate set time. Use caution; if additives contain calcium chloride, any rebar or metal wire mesh in concrete will rust and cause concrete to crack.
  • Use extra cement (typically 100 lb/ cubic yard) to make the reaction hotter and cause concrete to hydrate more rapidly.
  • Remember that you still need to wait for bleed water to evaporate. Incorporating the water into the surface during finishing will weaken the surface. Bleeding starts later and takes longer during cold weather; you can use squeegees or a vacuum to remove water quickly.
  • Wait until concrete has reached desired strength to remove any framework. If the framework is removed too early, the concrete will be damaged and the surface could collapse.

After implementing the above suggestions, It’s important to consider how you will keep concrete at the correct temperature during the curing process. Concrete must maintain a temperature above 50 °F for approximately 48 hours for the correct chemical reactions to take place. Two popular options used during cold weather concrete curing are heated enclosures and insulated blankets. If using an enclosure, ensure that the structure is both wind and waterproof. Additionally, ensure that there is proper ventilation for the space heater. Heaters cause an increase in carbon dioxide that could cause carbonation in the surface of the concrete.

Powerblanket® concrete blankets are an extremely effective option for attaining and maintaining the correct temperatures for concrete pouring and setting. Powerblanket® concrete blankets can be used to thaw ground before pouring concrete and again after finishing to keep concrete from freezing. Utilizing Powerblanket concrete blankets will ensure that concrete is kept at the correct temperature for the necessary reactions to happen quickly and the desired strength to be reached. With Powerblanket, it’s almost never too cold to pour concrete!

Compressed Gas Sizes

How long does concrete take to set

How long does concrete take to set?

If you really want to know the truth, concrete never stops curing; it continually hardens forever.  However, for practical purposes, it reaches a point where further hardening will be so slow it becomes unnoticeable.  In this article, we cover the basics of what you need to know about “how long does concrete take to set.”

 

Concrete Never Stops Curinghow long does it take concrete to set

The continual hardening occurs because cement particles react with the water in the mix (hydration), and as long as cement is in contact with moisture, even miniscule bubbles, it will continue to form bonds.  This is minimal after “full strength” is achieved, but it is continual.  

 

Curing Time for Concrete

In standard industrial cases, full strength concrete is recognized at 28 days.  At seven days, you should have concrete that is cured to 70% full strength or greater.  But to answer the question of, “How long does concrete take to set?”, concrete setting time is generally 24 to 48 hours.  At this point the neighborhood dog will not leave his footprints in it, but you should keep it clear of heavy equipment during this time period. Most mixes are cured at 28 days.

 

Factors Affecting Concrete Setting Time

  • Moisture plays a critical role in curing time for concrete.  If there is not sufficient water in the mix, the concrete will cure too fast, resulting in weaker overall strength.  Too much moisture, often used in the finishing step will weaken the top layer and cause flaking.
  • Hot ambient temperatures and wind accelerate the evaporation of moisture–speeding concrete setting time.
  • The mix design has a lot to do with concrete setting time.  Some jobs will require accelerants because the area needs to be usable as soon as possible.  The accelerant will do its job and speed up the concrete setting time.  Accelerant mixes will show a weaker overall strength in the end, but will still meet strength requirements.

 

Powerblanket Concrete Blankets

If you are wondering about how long does concrete take to set, Powerblanket has a solution for your concrete setting needs.  If you are dealing with HOT conditions and your concrete setting too quickly, consider the FluxWrap.

The FluxWrap from North Slope Chillers is portable cooling equipment that will keep newly poured concrete safe from heat, regulating concrete setting time in both regular and hot conditions.

The FluxWrap is combined with either a cooler or chiller to achieve optimum results. The Circulation Blanket draws heat to the blanket in order to cool the concrete.

  • Use Powerblanket’s patented heat-spreading technology in reverse–the cooling blanket draws heat away and lowers the temperature of the concrete.
  • Take it with you on every jog.  It is easily portable.
  • Blanket cover and insulation are the same as the robust system used in Powerblanket heating products
  • Control the curing speed of newly poured concrete even in hot conditions

If conditions are cold, Powerblanket concrete curing blankets provide a manageable way to cure concrete effectively and confidently. Powerblanket curing blankets increase production by rapidly curing with consistent, even heat.

  •  Cure concrete 2.8 times faster than conventional, insulated blankets
  •  Maintain moisture throughout hydrating process
  •  Easily installed and removed
  •  Produce cold weather concreting strength of up to 3,925 psi in 72 hours
  •  Prevent a freeze cycle
  •  Thaw ground and frost from job site before you pour
  •  Reduce downtime & increase profitability
  •  Maintain ACI compliance for cold weather concreting

 

Concrete Curing Temperature Makes a Difference

How Warm Does it Have To Be To Pour Concrete?

Whether the conditions are hot or freezing, the ideal concrete curing temperature should be maintained at about 55°F to achieve the optimum concrete strength.

Curing the Hoover Dam

At its completion in 1935, the Hoover Dam was the largest dam in the world and a marvel of labor and engineering.  The first pour began on June 6, 1933. Rather than being a single block of concrete, they built the dam as a series of individual columns. The trapezoidal columns rose in five foot lifts. This method allowed the tremendous heat produced by the curing concrete to dissipate. If the dam were built in a single continuous pour, the concrete would have gotten so hot that it would have taken 125 years for the concrete to cool to ambient temperatures. The resulting stresses would have caused the dam to crack and crumble away (The Story).  

The heat and dryness of Nevada posed additional complex problems with the pour and concrete curing temperature.  When the concrete was first poured, river water circulated through cooling coils of 1″ thin-walled steel pipes. Once the concrete had received a first initial cooling, chilled water from a refrigeration plant on the lower cofferdam circulated through the coils to finish the cooling (The Story).

Concrete Curing is an Art

We live in a world where faster always seems better; however, concrete that cures too quickly or under hot concrete curing conditions can actually result in weak or unstable concrete.  If concrete is cured in cooler ambient  temperatures (32°F to 50°F) with moisture continually present, strength gain will be slow but the concrete will eventually reach a high strength. Concrete should not be allowed to get hotter than 90°F or to dry out during the curing period.

Best Concrete Curing Temperature

By “best” we mean “most thoroughly,” not the fastest.  High temperatures mean faster curing, but fast curing equates to weaker strength in the end.  The following study by Paul Klieger in the Portland Cement Association Research Bulletin 103 illustrates this concept.

concrete cure time chart with concrete curing temperature

Concrete Cure Time Chart with Temperature

At an age of 1 day the 120°F concrete was strongest and the 25°F concrete was weakest. By 7 days the high-temperature cured concretes had no more strength than the 73°F concrete or even less. By the age of 28 days the high-temperature concretes were weaker than the 73°F concrete. From 28 days to 1 year the 55°F concrete was considerably stronger than the 73°F concrete. All of this suggests that, provided there is continuous curing, concrete cured at about 55°F for the first 28 days ultimately reaches the highest strength (Concrete).

Hot Weather Concrete Temperature Limits

Hot weather concreting doesn’t simply involve temperature.  High ambient temperatures, winds, and relative humidity all play a role in “hot weather.”  Under hot heather conditions, the primary curing issue is having the top of the slab of concrete dry much faster than the bottom. As concrete dries it shrinks. This means that the top will be shrinking while the bottom is not. This creates internal problems with the concrete that will result in a damaged slab. The top and the bottom of the pour need to cure at the same rate (Placing).

Concrete Curing Temperature Solutions

Is it too HOT?

Powerblanket ICE is portable cooling equipment that will keep newly poured concrete safe from heat.  Portable, insulated, and efficient, Powerblanket ICE effectively regulates the temperature of concrete under both regular and hot conditions.

The Powerblanket ICE Circulation Blanket is combined with either a cooler or chiller to achieve optimum results. The Circulation Blanket draws heat to the blanket in order to cool the concrete.

  • Use Powerblanket’s patented heat-spreading technology in reverse–the cooling blanket draws heat away and lowers the temperature of the concrete.
  • Blanket cover and insulation are the same as the robust system used in Powerblanket heating products
  • Portable
  • Control the curing speed of newly poured concrete even in hot conditions

Is it too COLD?

Powerblanket concrete curing blankets provide a manageable way to cure concrete effectively and confidently in the cold weather months. Even in warm weather, Powerblanket curing blankets increase production by rapidly curing with consistent, even heat.

  •   Cure concrete 2.8 times faster than conventional, insulated blankets
  •   Produce cold weather concreting strength of up to 3,925 psi in 72 hours
  •   Maintain moisture throughout hydrating process
  •   Easily installed and removed
  •   Prevent a freeze cycle
  •   Thaw ground and frost from job site prior to pour
  •   Reduce downtime & increase profitability
  •   Maintain ACI compliance for cold weather concreting

 

Concrete Curing Temperature

Works Cited

Concrete Construction Staff.  “Best Curing Temperatures”. Concrete Construction Magazine. 16 May 2017. http://www.concreteconstruction.net/how-to/best-curing-temperatures_o

“Placing Concrete in hot or cold weather”. Sakrete Blog. 16 May 2017. http://www.sakrete.com/media-center/blog-detail.cfm/bp_alias/Placing-Concrete-in-hot-or-cold-weather

“The Story of Hoover Dam – Essays”. Bureau of Reclamation. 16 May 2017. https://www.usbr.gov/lc/hooverdam/history/essays/concrete.html

 

Powerblanket Curing Blankets at the Statue of Liberty

Powerblanket® Goes to the Statue of Liberty

Reilly Construction out of Wrightstown, NJ won a bid from the U. S. Department of the Interior, National Parks to replace the roof of The Great Hall Statue of Liberty National Monument.  The Great Hall, which now houses the Ellis Island Immigration Museum, is considered one of the most symbolically important structures in American history. The Great Hall-Ellis Island was proclaimed a part of Statue of Liberty National Monument and is listed on the National Register of Historic Places.  Reilly nee
ded extra heat in the form of curing blankets to make this job happen.

 

The project involved removal of the existing inverted roof membrane assembly (IRMA) and replacement with a new multi-ply modified bitumen roofing system over a complicated tapered insulation deck assembly, approx. 60,000 Sq. Ft. The project also included the replacement of custom fabricated copper flashings and accessories throughout and the installation of a lighting protection system. Reilly worked with the NYS Historic Preservation Office (SHPO) to coordinate all the work.

 

Challenges Faced by Reilly

  •     Cold winter weather and high winds at this waterfront facility
  •     Working safely around thousands of tourists visiting this historic landmark daily
  •    Implementing various overhead protection plans at this historic landmark daily
  •    Mobilizing materials and equipment on a small island
  •    Limited laydown and staging areas
  •    Coordinating construction schedule with NPS & U.S. Park Police for VIP visits
  •    Ensuring compliance with the NYS Historic Preservation Office (SHPO)
  •    Day & night work


Finding Powerblanket

Dan DeSantis, the Senior Project Manager for Reilly, found Powerblanket products online and left his contact information. Upon follow up, we discovered that Reilly needed a heating solution to cure the masonry block work at the proper temperature (~50°F/~10°C) during December in New York and with the added chill of the water. Reilly used five Powerblanket MD0520 concrete curing blankets for the application, and appreciated the increased temperature control.

A Cure for What Ails You

Powerblanket concrete curing blankets provide a manageable way to cure concrete effectively and confidently in the cold weather months. Even in warm weather, Powerblanket curing blankets increase production by rapidly curing with consistent, even heat.

Why Choose Powerblanket Concrete Curing Blankets?

  •    Cure concrete 2.8 times faster than conventional, insulated blankets
  •    Produce cold weather concreting strength of up to 3,925 psi in 72 hours
  •    Maintain moisture throughout hydrating process
  •    Easily installed and removed
  •    Prevent a freeze cycle
  •    Thaw ground and frost from job site prior to pour
  •    Reduce downtime & increase profitability
  •    Maintain ACI compliance for cold weather concreting


Concrete Cooling: Curing Concrete in the Summer Months


We talk a lot about the dilemmas posed to concrete curing during the cold winter months, and for good reason too. It’s difficult to get concrete to cure well when the temperature drops. But what about when the weather is hot? True, fewer problems exist for concrete curing during the summer, but excessively hot temperatures can cause concrete to cure too quickly. Don’t worry; we’ve got you covered here too, with our concrete cooling:

 

canstockphoto3975308Concreting in the Summer

We all know that summer is the ideal time for construction projects, and concrete pouring is no exception. But when the summer months get really hot, it can be a little too much of a good thing. In fact, concrete cures best in a range somewhere between 70° to 80° F. As you approach numbers as high as 90°, however, you’ll start to run into problems. Concrete experts suggest that if you anticipate experiencing temperatures higher than 77° F after pouring your concrete, you should have a plan for remedying the effects of the high temperatures. Since temperatures above 77° F are very common in the summer months, you’ll need to have a concrete cooling solution in place.

Why, you may ask? Because when concrete is poured in high temperatures, it can cure too fast. One of the major concerns with really short curing times is the reduction of strength due to the demand for high water content during high curing temperatures. Pouring concrete in hot weather also poses the risk of dehydrating the concrete, which will lead to shrinkage and cracking. With these risks in mind, it becomes imperative to have a plan in place for combating the hot weather, and we have just the solution for it too.

 

Powerblanket® ICE for Concrete Cooling

Our new Powerblanket ICE cooling blankets allow you to simplify the concrete work you do in the summer by eliminating the side-effects associated with hot weather concreting. Just look at these features:

  • Powerblanket ICE uses Powerblanket’s patented heat spreading technology in reverse to draw heat away from the concrete while simultaneously circulating coolant throughout the blanket surface.
  • All three types of Powerblanket ICE cooling products are portable. (Both the ice box and chiller driven systems require 120VAC). See the Powerblanket ICE cooling product pages on our website for details.
  • We can provide Powerblanket ICE cooling products for custom applications quickly and cost effectively, just like our heating products. Just get us the details, and we can have a product in your hands in just a few weeks.
  • Powerblanket ICE prevents shrinkage and cracking by maintaining the ideal curing temperature during hot weather.

 

Don’t take a chance with the hot weather this summer. Reach out to us today for a quote on Powerblanket ICE products.

 

Learn More

Concrete Blankets From Powerblanket®

Cement Curing Blankets

Cement curing has always been a challenge in cold weather. Historically, experts have employed many different methods in order to aid in and speed up the curing process. Some methods are better than others. The best, in our opinion, is using concrete curing blankets from Powerblanket. Here’s why:

Concrete Curing Blankets

 

Why Electric Curing Blankets?

When placing concrete in cold weather, protecting the asset (the concrete) is not optional. For years now, experts have used insulated blankets to both protect the concrete and speed the curing process at the same time. Concrete cures due to a chemical reaction that generates heat as a byproduct. So insulating the concrete allows that heat to be trapped and used to aid in the curing process. Concrete cures fastest in very warm conditions, so this makes the use of an insulated blanket a practical and theoretically sound practice.

Of course, the use of traditional concrete curing blankets isn’t the only method employed among professionals. Other common curing interventions include:

  • Chemical additives
  • Hydronic heating systems
  • Electrically-powered concrete curing blankets
  • Poly/tarp cover with forced air heat applied

Sometimes the circumstance will allow for the luxury of a postponed pour, in order to take advantage of an expected temperature change.  But more often than not, schedules and deadlines make it imperative to institute curing assistance to get through less-than-favorable weather.

This is where Powerblanket Concrete Curing Blankets come in. As much as traditional curing blankets aid in protecting and accelerating the curing process, Powerblanket curing blankets provide both insulation and heat, protecting and accelerating all the more. Our patented blend of technology delivers an even distribution of electrical heat to the surface area of the blanket, trapping the heat of the chemical reaction in the concrete and adding the additional heat needed to accelerate the process even further.

Since Powerblanket Cement Curing Blankets insulate and heat, they effectively accommodate the hydration of the concrete as well. How well do they really work? Take a look at our case study to see an example of curing nearly three times as fast with our blankets.

The technology behind Powerblanket curing blankets serves to achieve several primary objectives, including:

  1. Preventing damage as a result of freezing in the early stage of curing
  2. Producing sufficient, specified strengths in a timely manner
  3. Insuring durability and long-term structural integrity
  4. Keeping projects on schedule, regardless of weather

So before you’re faced with a project that must go on despite inclement temperatures, make sure you have a plan on how to protect your concrete and keep your deadlines met. When considering the options you have before you, we’re confident you’ll find our solution to be the best answer out there.

 

Read the Case Study for Evidence that Powerblanket Cement Curing Blankets:

  • Cured concrete 2.8 times faster than conventional insulated blankets
  • Cured concrete 1.7 times faster without adding additional heat (un-powered)
  • Produced cold weather concreting strength of 3,925 psi in 72 hours

 

Additional Features:

  • Maintain moisture throughout hydrating process
  • Maintain ACI compliance for cold-weather concreting

 

Get the Case Study

Precast Concrete and Throughput: How to Improve Cure Times

The business of precast concrete manufacturing is one where you often have to hurry up and wait. Once you pour a precast form, you then have to wait for the time-consuming process of allowing the form to fully cure. The importance of proper curing can’t be undermined, but what if it could be efficiently and safely sped up?

 

Precast Concrete InfographicCure Precast Concrete 3 Times as Fast

What if we told you that you could speed up your precast concrete curing process, without the use of any additives, by as much as 300%? If you’re first thought is: prove it, then we would love to. In fact, it may interest you to know that the inception of Powerblanket heating solutions all started with concrete curing in the first place. We’ve been in the business of increasing concrete-curing efficiency for many years, and our solutions have been proven and tested innumerable times over to increase curing efficiency without any of the common side effects related to other forms of acceleration.

Additives can dehydrate your concrete and leave you playing a game of gains and losses. But Powerblanket custom precast concrete curing solutions keep your concrete insulated and hydrated throughout the curing process. Our patented blend of technology allows for the even and consistent curing of precast forms of all shapes and sizes.

So rather than balancing the pros and cons of using additives or accelerators in your concrete forms, let us show you a solution that creates no setbacks, only progress. To learn more about our precast curing blankets, select the button below for the infographic.

 

Precast Infographic

 

Powerblanket Receives Manufacturer of the Year Award from UMA

If you haven’t seen this headline somewhere else on the web by now, we’re happy to tell you all about it here. Utah Manufacturers Association recently awarded Powerblanket something we’re pretty happy about. Read on to learn more about the UMA Manufacturer of the Year Award.

 

UMA AwardUMA and Manufacturer of the Year

Utah Manufacturers Association (UMA), recently awarded Powerblanket the prestigious award  of Manufacturer of the Year. This award is given annually to the Utah-based manufacturer that proves to be the most innovative contributor to their space. There’s even more to it than this, but we’ll get to that.

UMA has been around since 1905. The organization prides itself on offering the “voice of industry” in the state of Utah, and they’ve been doing so for over 107 years now. UMA has clearly been talking Utah economy for a long time, but talking isn’t all they do. UMA is a trade association, and their goal is to enhance and improve the business climate in the state. UMA doesn’t only offer insight and expertise in the business of manufacturing, but the organization also has considerable experience in the legislative processes of state government. This is how they can do so much to vie for the interests of Utah businesses and the overall economic prosperity of the state.

UMA’s Manufacturer of the Year Award embodies the mission of UMA in multiple ways. By awarding the company that not only proves innovative in their respective markets, but also offers leadership in their industry, UMA’s award encourages and rewards the same idealism by which their organization operates. Powerblanket was chosen to receive this award for 2015, based on the embodiment of these characteristics and more. In fact, why don’t we just give it to you in their own words. According to UMA, Powerblanket received the award “for their outstanding performance in operational excellence, economic achievement, workplace safety, community outreach, and fidelity to the principles of free enterprise.”

Powerblanket is honored to receive such accolades from a high quality establishment like UMA. The credibility of UMA and the Manufacturer of the Year Award lends a great addition to our own image and ethos as a company devoted to “operational excellence, economic achievement, workplace safety, community outreach, and fidelity to the principles of free enterprise.”

So, from all of us here at Powerblanket, thank you, UMA for this great privilege.

 


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Precast Concrete and Powerblanket: A 300% Increase in Efficiency

If you’re in the business of precast concrete, then you know how frustrating it is to have to pour once a day. When it comes to precast production, the curing time for concrete simply isn’t very conducive to a good production turnaround. But what if you could increase your cure rate by 300%? Well, read on, because you can.

 

7454758636_064f8a4ec8_oConcrete and Powerblanket

The inception of Powerblanket over one decade ago actually spawned form the use of certain technologies (our innovative approach to heating solutions) in order to cure concrete faster and more efficiently. The idea for accelerated concrete curing was no new idea. Chemical admixtures were used to increase the cure time of concrete before Powerblanket came along to change the game. But the problem with chemical additives is that they dehydrate the concrete as they speed up the curing process. And as any concrete expert knows, that’s a big problem.

The Powerblanket solution, on the other hand, keeps the moisture in the concrete while producing insulation, protection, and heat—all of which increase the curing efficiency by 300%. That’s right, and in the case of pouring concrete into forms, well, such an increase makes a real difference. Adding customized Powerblanket heating solutions to your precast concrete business means that you can increase your throughput substantially. If you’re pouring only once a day, adding a Powerblanket solution to your process means you’ll be able to pour three times a day.

And the beauty of Powerblanket heating solutions is that they’re easy to install, remove, transport, and store. So when a form of concrete is cured, you can remove the blanket quicker than the form itself. Additionally, Powerblanket heating solutions can be customized to fit just about anything. So if you use unique precast forms, there’s no need to fret. To put it simply: if you can build it, produce it, or store it, Powerblanket can cover it.

 

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Concrete Curing: Not Just a Wintertime Problem

If you’re in the business of concrete, then you know that winter poses the most complications when it comes to proper concrete curing. However, you’ll be equally aware of the fact that summertime also has its challenges.

 

Concrete Curing- Not Just a Wintertime Problem

Summertime Concreting

Sure, winter is a far more difficult time to deal with when pouring concrete. Proper curing involves ideal temperatures, and winter imposes on these ranges more than any other season. That’s why when it comes to pouring concrete in winter, you need the assistance of a good concrete curing blanket. But what can be done to counter the challenges of summer, and what are those primary challenges?

In the summer months, you don’t have to worry about freezing temperatures. Instead, you need to watch for levels of relative humidity, temperature fluctuations between night and day hours, and an increase in the water demand for concrete curing. With these factors to consider, careful monitoring of the concrete is still an important element of the job. Hotter temperature and low humidity can increase the need for additional water, and large fluctuations between the daytime and evening temperature can pose significant problems too.

If there is the risk of a rapid drop in temperature, then there is the risk that your concrete could crack. Even though the temperature may be ideal for curing during the day, that doesn’t mean it will be at night. Certain regions can experience significant temperature variances between daytime and evening hours, and these variances should be considered potentially problematic.

 

Using a Concrete Curing Blanket in the Summer?

It may seem a bit of a stretch to suggest the use of a curing blanket during the summer months, but the reality of the situation is that it can be a very reasonable call. Think about the potential scenario of dropping temperatures at night. If your concrete is curing well during the heat of the day, and then experiences a drastic drop in temperature at night, then it’s going to affect the cure and even cause potential cracking.

Using a concrete curing blanket at night would allow you to regulate the temperature range even if it’s dropping. This would produce a more uniform cure and would also speed up the process significantly. The blanket likely wouldn’t be needed during the day, but applying it at night could greatly decrease the fail rate of an expensive and time consuming project.

 

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Winter Preparation: Now’s the Time

As the temperatures around the nation rise into the hundreds, cold-weather preparation may be the furthest thing from your mind. What’s more, there are plenty of warm-weather applications that Powerblanket technology is used for. But we would be completely remiss if we didn’t say enough of proper winter preparation. After all, when it comes to preparing for winter, you don’t want to be a grasshopper…

 

Winter Preparation- Now’s the Time

Aesop’s Fable: The Ant and the Grasshopper

Perhaps you’re already familiar with the old fable of The Ant and the Grasshopper from Aesop. If you’re not (and even if you are) we’ve recited it here. Below follows the most popular English renditions of the story:

“In a field one summer’s day a Grasshopper was hopping about, chirping and singing to its heart’s content. An Ant passed by, bearing along with great toil an ear of corn he was taking to the nest.

‘Why not come and chat with me,’ said the Grasshopper, ‘instead of toiling and moiling in that way?’

‘I am helping to lay up food for the winter,’ said the Ant, ‘and recommend you to do the same.’

‘Why bother about winter?’ said the Grasshopper; we have got plenty of food at present.’ But the Ant went on its way and continued its toil.

When the winter came, the Grasshopper found itself dying of hunger, while it saw the ants distributing, every day, corn and grain from the stores they had collected in the summer. Then the Grasshopper knew it is best to prepare for the days of necessity.”

Of course, the implications of this story can go far deeper than the need for good winter preparation. But for the sake of comparison, the story’s plot is rather poignant for the industries we serve. When cold weather does hit, it’s best to already have the systems and products you need in place to brave the effects of winter. So if you have assets to cover come late October, now’s the best time to start getting together the protection you’ll need.

 

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Cold Weather Concreting – Protection Is Essential

A Concrete Curing Solution 2When pouring concrete in cold weather, protection is critical. Hopefully it’s part of your plan.  You don’t have to take our word for, there’s plenty of documentation substantiating the need for precautionary measures. While some options have proven to be better than others, a few of the more common are as follows:

 

  • Chemical additives

 

  • Standard insulation blankets

 

  • Hydronic heating systems

 

 

  • Poly/tarp cover with forced air heat applied

 

Concrete producers use several methods to help contractors. The three most common methods used my concrete producers are as follows:

 

  • Cold-weather concrete mix design

 

  • Chemicals added at the plant

 

  • Chemicals added on-site

 

In some situations there is the luxury of project postponement in favor of better climate temperatures.  However, in most cases, schedules and deadlines make it necessary to place concrete in less than favorable conditions. Penalties and fines for not meeting defined schedules can be the difference between a profitable or unprofitable job. In these cases, all factors need to be taken into consideration.  Insuring proper concrete curing while sustaining concrete strength and durability is critical.  Providing a concrete curing solution that enhances the process may be just as important.

As mentioned earlier, there are new methods that make cold-weather concreting less stressful than it’s been in the past.  These methods have improved over time due in large part to improvements in technology.

New technological advancements help in the following ways:

 

  • Prevent damage as a result of freezing at an early stage of cure

 

  • The development of sufficient, specified strengths in a timely fashion

 

  • Insure durability and long-term structural integrity

 

  • Keeps projects on schedules

 

Don’t wait till the last minute to choose a proper heating solution. The parameters and objectives of each project should drive your decision for a cold-weather concreting solution.  Each solution in turn should be evaluated on the merits of the benefits they provide.  The selection of a proper solution can enhance the placement and curing process.

 

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How Good is Heat Spreading?

GreenHeat Technology – The Heating Advantage 1I get asked about every week, what the benefits are that we offer to our customers. The answer is actually quite simple. Depending on the industry, company, or corporation we are working with we offer a variety of benefits. Through the use of our unique heat spreading technology, we offer companies amazing benefits.

In fact, Kim Herman, Operations Manager from Precision Utilities Group said the following:

Your blankets are absolutely excellent. Our crews have been working on some cell tower projects in Michigan this January where it has been extremely cold. The project restricts us from being able to use power tools on the job sites so we were left to figure out how to dig without equipment. We are so glad that we found you guys! Thanks to Powerblanket Extra Hot blankets, we were able to lay them out the day before we needed to dig, and by morning the next day, the ground was thawed out and softened, making it easy to dig and get our job completed much more quickly. In fact, we estimated that your blankets have saved us approximately 10 hours on each site. On ten sites to date, we estimate we have saved approximately $5,000 already! We have already paid off the initial investment of these blankets. When we are looking at thousands of sites, and with the savings we are saving per site, this is huge! We are excited at how much time and money your blankets have saved us and will save us in future.

-Kim Herman

OSP/COEI Operations Manager

Precision Utilities Group

I have worked with Kim for some time now and she tells me often, that when she is on job sites, contractors and other companies ask her about her blankets she’s using and if they work. She lets basically tells them what you just got done reading and they ask her where to buy some for their job functions.  We offer Kim almost all the benefits she needs.

We work with other industries that require even heat distribution and rely on uniform heat which we offer to them without the fear of overheating or burning of material.

Another example is from Eric from a Colorado Energy Company:

Your blankets have been wonderful to work with. Our Totes are outside and have been kept warm and protected from the harsh conditions here in the cold Rocky Mountains. We have loved the functionality of these blankets because they are extremely easy to wrap around our totes, strap shut, plug in, and maintain desired temperature with the thermostatic controllers.

We have not had any issues with your blankets flaking, tearing, or ripping in any way, and have found it beneficial that they are water resistant as well. As the blankets have been prone to getting dirty, due to being outside, we have easily sprayed and wipe them down to help keep them clean and looking new.

We wanted to thank you for assisting us with our heating frustrations and keeping our totes and the material within, warm and protected. You have helped keep our company running efficiently and retaining profit. We love your blankets and would recommend them to anyone.

-Eric

A Colorado Energy Company

No matter what your company, corporation or industry is, we will find one or more benefits you and your company can profit from. Please give us a call. We are more than happy to talk with you and assist you and your heating needs.

How Does Construction Benefit from Heating Solutions in Cold Weather?

Regulations on Diesel Affect Mining, Construction, and Agriculture 2Cold climate and winter conditions often pose challenges for construction projects of all kinds. Precautions should be taken in an effort to prepare and plan for such conditions. Think about theheating solutions that can combat the cold. Here are some benefits from addressing these issues during the planning stages of any project:

  • Eliminate or reduce costly down time
  • Keep the project on schedule
  • Reduce labor charges
  • Eliminate the need to employ non-budgeted services to provide necessary relief
  • Avoid fines / penalties associated with non-compliance to schedules and completion dates
  • Provides a safe work environment
  • Protect temperature-sensitive materials

Cold-climate conditions have an effect on applications across multiple industry segments. A few of these would include:

  • General Construction
  • Concrete Construction
  • Oil & Gas Production & Services
  • Railroad
  • Mining
  • Agriculture
  • Food Processing

In order to emphasize this point let’s take a look at just a few examples.

Concrete Construction: The issue of placing concrete in winter has standards and regulations that address the specific need for providing a heating solution. The American Concrete Institute specifically addresses the issue of Cold Weather Concreting in its Committee 306. While it does not go to the extent of describing the type of winterization process be utilized it does address this critical need. There are several common methods and processes, each with its own benefits. Among these are:

  • Glycol / Hydronic Systems
  • Forced Air Heaters
  • Chemical Additives
  • Poly Cover
  • Standard Insulating Blankets
  • Electrically-Powered Curing Blankets

Among the benefits derived from winterization process in this concrete construction example:

  • Ability to continue to place/pour concrete in cold weather
  • Achieve acceptable PSI levels within specified time frame
  • Meet critical deadlines / schedules
  • Maintain structural integrity of concrete
  • Meet or exceed specification requirements

Oil & Gas Production and Services: There are plenty of examples to go around here. The importance of continued production is of paramount importance to the producers and service providers alike. Downtime and lack of production can cost tens of thousands of dollars on a daily basis. The additional costs associated with outside service providers to get a project back on line can also be prohibitive. These issues can impact the process at any level: drilling, pumping, pipeline product transfer/flow, hydraulic fracturing, backflow, completion, etc. Those costs can ultimately end up being passed on to the consumer of the respective commodity.

Some of the alternative sources of heating solution and freeze protection are:

  • Conventional Heat Trace & Insulation
  • Steam / SteamTruck
  • Hot Oilers
  • Glycol
  • Propane
  • Insulation of tanks/vessels
  • Electrically-Powered Heating Blankets

Among the benefits associated with heating and freeze protecting processes associated with Oil & Gas:

  • Maintain acceptable production rates
  • Sustain pipeline flow
  • Prevent costly downtimes
  • Protect tank contents

Freeze protect water, fluids, chemicals stored in tanks

Finally, address the cold climate and harsh environmental conditions early in the pre-construction phase. There are options and alternatives available for the right heating solution for each situation. Perform the due diligence and make your determination based on that which provides the optimum result for your given project.

How Does Heat Help Cure Precast Concrete?

How Does Heat Help Cure Precast Concrete?The precast concrete industry, much of which focuses on custom projects and applications, adheres to a strict standard of quality controls for production purposes. These quality controls include paying close attention to the raw materials such as sand, cement, aggregates, chemicals (if needed) and water used in the process and development of the proper mix design. All of the quality control measures taken and all the attention paid to the details and standards set forth by National Precast Concrete Association (NPCA) would be rendered somewhat meaningless if proper curing procedures and techniques were not followed closely.

There is a growing pattern and demand for higher compressive strengths and being able to realize those PSI ratings in a shorter curing cycle time. While these issues can challenge production at any time it is particularly challenging during periods of the year when cold weather becomes a factor. Common problems encountered during the cold-climate times of the year can include but are not necessarily limited to:

  • Potential freezing in the early stages of placement
  • Inability to achieve required compressive strengths within a specified period of time
  • Improper curing procedures
  • Frequent and /or rapid temperature change

One of the more critical elements in the curing process is moisture retention. The evaporation rate of this moisture needs to be controlled as well as possible and cold weather is an unacceptable excuse or reason for delaying production.  Cycle time can obviously take longer during periods of cold weather and we all know that time is money. In situations where the ambient temperature slows both the evaporation rate and thus the curing time utilizing heat in conjunction with moisture curing has proven to be a successful solution to the problem. I can site an example where the use of electrically powered heating blankets which provided an even distribution of heat also critical to the successful accomplishment of proper cure and compressive strength reduced the cycle time by as much 33 percent.

Two of the most common and conventional means of providing heat in a precast operation during initial cure are steam and hot air. While effective during the “initial” curing stage, neither method is recommended once the concrete slab has attained its “initial” set. The use of an electrically powered heating solution can provide several benefits:

  • Freeze protection
  • Sustainability of acceptable temperatures to enhance cure
  • Accelerate the achievement of specified compressive strength levels while preventing rapid temperature fluctuations during the curing cycle

I encourage you to understanding the factors that impact precast concrete production and general concrete construction in cold-weather and the standards to which you are looking and needing to adhere to.

Can Industrial Heating Blankets Thaw Frozen Ground?

Ground Thawing—What a Concept 1Yes. Industrial heating blankets can be used for various purposes. Many industries utilize electric heating blankets for different purposes and solutions.  

When working under a time constraint and having hard, dense soil, it can be cumbersome trying to dig and make any sort of progress. By adding an industrial heating blanket to the surface of the frozen soil, it slowly, but surely, begins to thaw and soften the ground beneath it. The longer you let this process continue, the more drastic the results and the ground will become more workable.

Can Electrically Heated Concrete Blankets be Used for Other Purposes?

How Do Heated Concrete Blankets Help Cure ConcreteYes. Electrically heated concrete blankets serve more than one purpose, especially in flatwork / concrete and general construction. Examples include:

It may be more appropriate to refer to these types of products as “heating solutions” instead of “blankets” to not confuse them with the common insulating blankets. These do not generate any heat themselves and rely on other sources of heat to make them a viable option.

3 things to look for in an electrically heated concrete blanket that can be used for other purposes:

  1. A product that generates heat but also distributes the heat evenly and efficiently
  2. A product that provides the right insulation so the heat generated is not lost
  3. A solution provider that supplies custom electrically heated blankets so your problem is solved

Tags: concrete blankets, electric concrete blankets

When Should I Use a Standard Versus a Custom Heating Solution?

The Benefits of Investing in a Custom Tank Heater 2The answer varies based on your application. Both standard and custom heating solutions may work depending on your short and long-term objectives. By understanding your application needs and expectations we can help you solve your problem.

For example, I recently talked to a potential customer who uses a horizontal, precast concrete curing application with a specific and defined heating requirement and a time-limited PSI outcome. I also learned that their projects differed in both layout and design configuration, which adds to the complexity and solution.

So, while a custom heating solution may provide the optimum outcome, the customer thought that a custom blankets for each job would cost too much. This led to me helping them find a more practical solution while not loosing site of the desired outcome.

Standard heating blankets come in many sizes that can easily conform to the multiple job layouts when used in combination. Also, an occasional custom may provide the right answer for a unique project. And, sometimes both a standard and custom solution in combination works best.

That is what we do…find the right solutions for your heating needs.

How Do Concrete Blankets Help Cure Concrete?

How Do Concrete Blankets Help Cure ConcreteHow do Concrete Blankets help cure concrete?

Placing concrete in cold weather creates costly effects on the integrity of the concrete if precautions are not taken to provide winter protection. Both ACI 306 and the NRMCA address the need to provide a heating solution when placing concrete in “cold weather.”

Typical problems experienced in cold weather concreting include:

  1. Standard insulating blankets, regardless of “R” value, do not generate heat and have limited sustainable value when it comes to retaining the heat of hydration generated by the concrete naturally.
  2. Force air heaters and accelerators can enhance premature curing causing possible shrinkage, a condition that can result in cracking and structural damage both short-term and long-term.
  3. Freezing of the bleed water necessary during the curing process.

How would your business increase if you used heated concrete blankets?

  1. PSI ratings achieved could be achieved 2.5 times faster than conventional curing methods and accelerators.
  2. You could speed up your concrete production cycles.
  3. Because your concrete integrity and strength increased, you could move on to other jobs.

Powerblanket heated concrete blankets not only generate and evenly distribute heat but retain that heat over longer periods of time allowing the concrete to avoid detrimental freeze-thaw effects during early stages of the curing process, an event that can greatly reduce the integrity of the concrete by as much as +/–  40 percent.

How Powerblanket Technology Works

How Powerblanket Technology WorksPowerblanket® uses heated blankets to keep keep industrial materials within spec, help concrete cure in less time, thaw frozen ground quickly, and much more. Most heating solutions are riddled with hot and cold spots that waste energy and can put your project at risk. What makes us different is that we use our patented GreenHeat® technology to spread heat evenly throughout the surface of the heating products. This eliminates hot and cold spots, conserving energy and ensuring your temperature specific product is kept to spec. To help show why our heating products work so much better than our competitors, we broke everything down to a simple graphic.

Click to view the full-size image: