Winter Safety Tips

In preparation for the winter months, it’s important to consider what measures you will take to exercise proper safety precautions in both your home and commercial or industrial workplace.  During 2014, the United States Department of Labor recorded 42,480 workplace injuries and illnesses involving ice, sleet, or snow that required at least one day away from work to recuperate. Of these reported incidents, 82% resulted from slips or falls on level ground (Bureau of Labor Statistics). Planning and preparing can save you significant money in the long run and prevent serious injuries. We suggest you consider the following winter safety tips as you plan how you will best maintain a safe environment at your home or workplace during cold, snowy, or icy weather.

 

Home Safety

Before winter months hit, it’s important to check that your home is prepared. Damage from frozen pipes or faulty heating systems can be expensive and even deadly.

  • Check that your home is properly insulated (walls and attic), that you have adequate storm windows, and that windows and doors are caulked.
  • Have your heating systems professionally checked and serviced. It’s important that they are clean, working properly and ventilate to the outside.
  • Make sure you are equipped with carbon monoxide detectors and are familiar with the symptoms of carbon monoxide (CO) poisoning.
  • Remove tree branches that could become heavy with ice or snow and fall on your home.
  • If possible, shut off outside water valves.
  • To protect exposed pipes, allow a small trickle of water run from connected faucets.
  • Open kitchen and bathroom cabinet doors to allow air to circulate around pipes.
  • Keep your thermostat set to the same temperature day and night and leave it set to no lower than 55°F while away from home for an extended time. The extra cost of heating your home is minuscule in comparison to the expensive cost of damages from frozen or burst pipes.
  • If your home has a fireplace, use a glass or metal screen to prevent sparks or even rollings logs from making their way to flammable carpet or furniture.
  • When using a space heater, follow the three-foot rule- keep any surrounding items at least three feet away from your heater.
  • Before going to bed, make sure any space heaters are turned off and fire embers are fully extinguished.

 

Workplace Safety

It’s never a good idea to cut corners when it comes to safety during snowy or icy winter months. This is especially true when you have a responsibility for the safety of your employees and patrons. Taking extra time to plan and create a safe work environment will prevent injury and keep your workday running smoothly.

  • If you work at a commercial retail property, it’s important to keep in mind that the last months of the year will likely be some of your busiest. During these periods of larger crowds, it’s more important than ever to keep walkways clear of pallets, boxes, or other items. Remember: safety first!
  • Take extra time to keep floors clean and dry. Any snow that gets tracked into your workplace can quickly create a dangerously slippery surface.
  • Use “wet floor” signs where necessary.
  • Provide adequate lighting in your workplace that will help illuminate any wet or slippery surfaces.
  • Encourage employees to wear slip-resistant footwear.
  • If you are working on a project outdoors, review your work site safety every day. Surfaces can become dangerously slippery overnight.
  • Schedule outside work in shorter increments and break up large projects into smaller tasks.
  • Establish a warm area for employees to take breaks from outside work.
  • Keep track of weather forecasts. The last thing you want is for your employees to be stuck working outside in a terrible snow storm or severely cold temperatures.
  • Ensure that employees wear appropriate clothing for outside work such as a wind resistant coat or jacket, a hat, scarf, mittens, and waterproof boots.
  • Make sure that employees stay dry. Wet clothing loses its ability to insulate and quickly transmits cold temperatures to the body.
  • Be familiar with and watch for signs of frostbite and hypothermia and get immediate medical attention for any symptoms.
  • Sprinkle icy surfaces with sand to provide traction or salt to melt the ice.

 

Avoid Slip and Fall Accidents

An effective solution to keeping steps, doorways and walkways safe and ice-free is the Summerstep Snow Melting Mat. Summerstep heated mats are designed to be left outside all winter long, can be custom made to fit any location, and will melt approximately 2 inches of snow per hour while operating. It eliminates time-consuming shoveling and de-icing and prevents slips that could cause serious injury and even a lawsuit. To save time and hassle, and for added peace of mind, consider making Summerstep heated mats a part of your winter safety precautions.

 

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.

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

 

Hot Weather Concreting Made Easier

Hot Weather ConcretingHot weather concreting

Hot weather concreting problems are most often encountered in the summer; however, any condition that increases curing rates and strips the concrete of moisture is considered hot weather concreting.

Pouring Concrete in Hot Weather

With temperatures rising and summer approaching, attentions shift from protecting concrete from the cold to concreting in hot conditions.  When pouring concrete in hot weather, special procedures should be followed for proper mixing, placing, finishing, and curing.  High ambient temperatures, high concrete temperatures, low relative humidity, and/or high winds impair the quality of freshly mixed and recently placed concrete (Hot).  Pouring concrete in hot weather affects laboratory test results, showing that higher temperatures affect the compressive strength gain of hardened concrete. Even though concrete poured in hot weather will produce higher early strength but as time goes by, the ultimate strength will be lower than expected (Rodriguez).

Water Loss

Hot weather concreting causes increased setting rates and rapid water loss.  Shrinkage and cracking are usually associated with hot windy weather.   The major side effect of faster curing and water loss is decreased overall concrete strength.  It is critical to prevent moisture from evaporating from the concrete surface. The evaporation rate removes surface water necessary for hydration , and thermal cracking may result from rapid changes in temperature, ie. pouring concrete on a hot day followed by a cool night (CIP 12). Proper mix design can compensate for these conditions, and in combination with protective measures to prevent rapid evaporation, quality concrete can be poured in hot temperatures (Rodriquez).

Adding water can increase concrete workability. However, adding water beyond the amount required by the approved mix design increases the water to cement ratio. This, in turn, can result in decreased compressive strength and an increased chance of cracking (Hot).

Recommendations for Hot Weather Concreting

Preparation is key and there are several basic precautions that can reduce the damaging effects of hot weather on concrete:

  • Use mix designs that are less susceptible to the effects of hot weather. The use of low-heat-of-hydration cement and certain admixtures (such as hydration retarding and/or water-reducing admixtures) are two standard approaches.
  • Keep concrete as cool as reasonably possible. ACI 305R does not state a maximum “as-placed” or “as-delivered” concrete temperature, but 90° F is commonly used. Substituting chilled water or shaved ice for a portion of the required mix water can help.
  • Limit the amount of time between loading the concrete at the plant and placement/finishing at the site.
  • Limit water addition at the job site, except to adjust slump upon arrival (when permitted by mix design).
  • Avoid or limit hydration accelerating admixture use.
  • Schedule large concrete pours in the early morning or evening when temperatures are cooler and have the manpower available to complete the job as quickly as possible.
  • Use temporary wind screens and water misting nozzles to reduce surface moisture loss (Hot).
  • Consider using a concrete cooling blanket to both retain moisture and protect the concrete’s surface from high ambient temperatures.

Powerblanket ICE Concrete Cooling

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 while also cooling the concrete.

  • Blankets use Powerblanket’s patented heat-spreading technology in reverse–the cooling blanket draws heat away from the drum and lowers the temperature of the concrete.
  • Blanket cover and insulation are the same as the robust system used in the Powerblanket heating products
  • Powerblanket Ice industrial cooling systems are portable (120VAC required)
  • Control the curing speed of newly poured concrete even in hot conditions

Hot Weather Concreting

 

Works Cited

“CIP 12 Hot Weather Concreting”. NRMCA. 5 May 2017. www.nrmca.org/aboutconcrete/cips/12pr.pdf

“Hot Weather Concrete”. Engineering Consulting Services.  5 May 2017. www.ecslimited.com/blog/hot-weather-concrete

Rodriguez, Juan. “Pouring Concrete in Hot Weather: Tips and Tricks”. The Balance.  5 May 2017. www.thebalance.com/pouring-concrete-in-hot-weather-845030

 

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


5 Helpful Tips for Winter Construction Efficiency

5 Tips for Winter Construction

Working outside during the cold winter months presents many obstacles; however, some jobs will not wait for better circumstances. Below are some tips and solutions to improve winter construction.

1) KEEP YOUR EMPLOYEES SAFE

Train your employees in proper winter construction precautions.  Encourage everyone to wear layers of loose-fitting clothing, to stay dry, and to protect from the wind and sun with gloves, hats and sunscreen.  If conditions become too cold/dangerous, employees should have access to shelter.

On the work site, remove ice and snow regularly to prevent slips and falls.  This can be a full-time job depending on the weather.  The act of shoveling snow can also be extremely strenuous, especially for those individuals who do not engage in regular cardiovascular activity. According to the Cleveland Clinic, approximately 11,000 people seek shoveling-related hospital treatment each year for injuries (93%) or cardiac issues (7%). To save time, energy, and your employees health, use Summerstep heated safety mats to keep the walkways on your construction site clear.

Summerstep Snow Melting Mats

  • ,  Protect personnel from winter weather conditions and keep stairs, doorways, walkways, and ramps free from snow and ice
  •   Prevent slips and falls
  •   More convenient than shoveling snow
  •   More effective for snow and ice melting than harsh chemicals (less damaging to the environment, reusable, won’t damage concrete or other flooring surfaces)
  •   Will melt approximately 2 inches of snow per hour when operating
  •   40 Watts/Sq ft heated area
  •   The ONLY snow melting mat product made in the USA

learn-more-summerstep-01

2) MAINTAIN INTEGRITY OF CONCRETE

Winter construction cold-weather operations aren’t just about safety. While most construction tasks can be carried out in cold weather, some operations, such as concrete work, can take much longer and even fail without proper precautions.

 

If concrete is to reach necessary strength levels, it can’t be allowed to freeze for the first 24 hours after being poured or placed. Sheeting the concrete can ensure the required temperature and moisture necessary for curing, if the weather isn’t too severe.  In severe conditions, supplemental heating systems or enclosures must be brought in to maintain the integrity of the concrete.

 

Powerblanket Concrete Blankets provide a manageable way to cure concrete in the cold weather months, save you time and money, and come in various lengths and sizes. We have you covered.

 

Powerblanket Concrete Curing Blankets

  •   Cure concrete 2.8 times faster than conventional insulated blankets
  •   Produce cold weather concreting strength of 3,925 psi in 72 hours
  •   Maintain moisture throughout hydrating process
  •   Easily installed and removed
  •   Maintain ACI compliance for cold-weather concreting  Certified to UL and CSA standards

learn-more-concrete-blankets-01

3) DON’T LET FROZEN GROUND SLOW YOU DOWN

When it’s cold and the ground freezes, the job suffers.  Often prep for winter construction takes longer than the actual job.  Some industrial companies try heating the ground with massive coils or large heating systems, which become expensive and cumbersome. This approach requires rental fees and transporting equipment.  

Powerblanket has considered the difficulties and delays associated with winter construction and cold/freezing temperatures and has created a solution.  With Powerblanket’s patented heating technology you can prep the ground with little to no effort or supervision on your part.

Powerblanket ground thawing blankets have a higher power density and hotter temperature than our concrete curing blankets. The higher power is iideal for ground thawing applications and curing epoxy or resins.

Why Powerblanket Ground Thawing Blankets?

  •   High power density thaws frozen ground quickly
  •   Remove frost prior to concrete pour
  •   Melt snow and ice from roofs, walkways, and construction areas
  •   Easily placed and removed for repeated use in harsh winter weather
  •   Can be used to cure epoxy and resins
  •   Certified to UL and CSA standards

learn-more-ground-thawing-01

4) KEEP MATERIALS WARM

Masonry, roofing, paint, and plaster/stucco materials are all sensitive to cold weather.  Maintaining the integrity of these materials is critical for their success in winter construction.

Powerblanket Hot Boxes save you money by keeping your products from freezing without the risk of overheating. The Hot Box pallet warmer is easily assembled, taken apart. Hot boxes are ideal for cold wea
ther storage, freeze protection, transporting, job site heating, remote location use, and winter roofing. Standard Hot Boxes hold product between 100°F and 120°F (38°C and 49°C) and optional adjustable thermostatic controllers allow temperatures to be precisely controlled.

Powerblanket Hot Boxes:

  •   Quick and easy assembly
  •   Preserve temperature sensitive material
  •   Heat materials and palletized products: adhesives, shingles, paint, caulk, resins epoxies, etc.
  •   Access doors on two sides.
  •   Certified to UL and CSA standards

learn-more-hot-boxes-01

5) USING A PROPANE HEATER

Winter construction professionals often use temporary, propane-powered heating equipment on the jobsite, making it easier to finish projects on time and on budget. In addition to providing more comfortable working conditions, propane-powered heaters can also maintain the ambient temperatures necessary for common tasks like drywall installation or painting. However, like any portable heating device, propane-powered heaters must be used and maintained properly.

When temperatures get too low, the propane will not flow consistently or effectively, and you may lose your heat altogether. Propane-tank efficiency will fall substantially as the temperature drops. As the temperature drops, so does the pressure in your propane tank, and the pressure in your propane tank directly affects the volume of propane you have to work with. Your extraction rate (how quickly and smoothly you can extract propane from the tank) will suffer as well. Without a heating source to assist in the pressure maintenance of your tank, you will have to keep it as full as possible in order to keep it working, even if temperatures are mildly cold.

Powerblanket Propane Tank Heater

Powerblanket has the best propane tank heating solution on the market. These heating blankets will help maintain pressure and efficiency on just about any size tank. All Powerblanket heating blankets are certified to UL and CSA safety standards

Benefits of Powerblanket Propane Tank Heaters:

  •   Increase performance and efficiency of propane tanks
  •   Eliminates unnecessary cylinder refills in cold weather
  •  Even heat distribution in the areas where it is needed most
  •   Save money by optimizing gas and material usage
  •    Certified to UL and CSA standards

learn-more-propane-tank-01

 

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

Powerblanket® Hot Box and Curing Blankets for Post Curing


When it comes to post curing, maintaining ideal temperature is a must. And if you’re post curing small to medium sized parts, then you may find yourself using expensive ovens, or else taking a whole lot of time and money to build your own. Thankfully, you don’t need to do either of these with the Powerblanket Hot Box on hand.

 

Hot BoxThe Powerblanket Hot Box

Our Hot Box product (sometimes referred to as a Bulk Material Warmer) works great at maintaining the needed temperature for post curing small to medium sized parts. Its durable construction allows for secure and lasting installation, while its ease of setup makes it transportable and storable. The Powerblanket Hot Box can be easily assembled, disassembled, and reassembled. It gives you the option of bringing your parts to the Hot Box or bringing the Hot Box to your parts. Our Hot Boxes hold product at a temperature of up to 120° F, and the optional adjustable thermostatic controllers allow temperatures to be controlled with precision.
So if you need to keep your epoxy cures at temperature for prolonged periods of time, a Powerblanket Hot Box just might be the thing for you.

 

hot-box-one-cordOur Premium Hot Box (HB64PRO-1440) Offers:

  • A larger footprint (48” x 48”)
  • An internal steel frame (48” internal height)
  • The highest wattage (1440 Watts)
  • A controller for precise temperature regulation

 


9 Things to Consider in an Epoxy Curing Solution 2Post Curing with Powerblanket Curing Blankets

Of course, after talking about the Hot Box, you may be thinking: “yeah, but what if what I need to cure is bigger than 48” x 48”? Well, there are two simple answers to this question. Depending on your application needs, we could build a custom size Hot Box for you. But if one of our flat curing blankets would work better, we would certainly suggest this as an option.

If you have curing needs that go well beyond what our Hot Boxes can handle, in regard to size and temperature, then our curing blankets are the ideal answer. Our high-temp flat blankets have high watt densities and produce higher temperatures for post curing epoxies and resins that require ranges beyond 100° F – 120° F, up to 400°F.  What’s more, these blankets can be made to cover large areas simply and effectively. So whether it’s carbon fiber construction, wind blade repair, floor coatings, or some other resin post curing application, Powerblanket has a solution for it.

 

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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

 

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Custom Heating Solutions Don’t Take as Long as You Think

Custom Heating BlanketsOften times when we think of customization, or taking a custom approach to something, the first thing that comes to mind is time. “How long is that going to take?” we ask ourselves. Well, in the case of Powerblanket custom heating solutions, not too long at all. Our custom approach to heating solutions doesn’t take as long as you might think. In fact, in most cases, Powerblanket can turn around a custom project in one to two weeks.

 

Custom is the Way to Go

Many applications can be adequately covered by our ready-to-ship product line, but there are equally as many projects that need a custom solution. Powerblanket works with many companies in a myriad of industries to supply custom heating solutions to a wide range of needs. So what does a custom heating solution process look like when working with us? We’ll show you.

Powerblanket’s custom heating solutions can be tailored to fit just about any application. If you can build it, produce it, or store it, Powerblanket can cover it. What’s more, completing a custom project with us can be summarized in three easy steps:

 

  1. Contact us and tell us the details of your application. (Many of our custom projects start with a simple phone call to one of our reps. From here, you can send any and all information we’ll need to form the proper heating solution for you. Additionally, we do offer what we refer to as the white glove treatment. In other words, we can come onsite and get all the details on our own.)
  2. We’ll design a custom heating solution for your application, based on the information and feedback we gather or you deliver to us. (Whether you choose to send us information or want us to come onsite, we will get all the details we need.)
  3. We’ll build your custom solution and ship it to you within two weeks. (Sometimes, we can even turn a project around in as little as one week.)

 

Case In Point

When Enduraplas’s plastics manufacturing process needed heating assistance, Powerblanket was able to deliver a custom tank heater that increased efficiency beyond expectations. Enduraplas’s manufacturing process uses propane extensively—making their large propane tanks an invaluable asset. However, cold weather threw a real damper on the whole thing, impeding the flow of propane significantly.
With the Poweblanket custom heating solution in place, however, Enduraplas was able to run their manufacturing processes through the coldest of weather.

 

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Gold Coast Yachts is another great example of how Powerblanket custom heating saved immense amounts of time and money. Gold Coast Yachts builds custom, carbon-fiber yachts, and the curing process for the large sections of carbon-fiber frames needs high-temperature exposure for long periods of time. Previous to implementing the Powerblanket custom curing blankets, Gold Coast had to architect, build, and utilize large custom ovens for every cure. In other words, they had to build a large shed around every frame in order to pipe heat into the enclosure and cure the resins at the proper temperature. This process, as you can imagine, took a whole lot of time, manpower, and money. With Powerblanket, however, Gold Coast Yachts was able to save thousands of dollars and hours of time on each project.

 

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When Cenovus turned to Powerblanket to design a custom valve and transmitter heating solution, Powerblanket was able to turn the product around with ease and speed. Powerblanket set out to create a custom heating system that eliminated the risk Cenovus had of losing money to freezing valves and transmitters. After Powerblanket completed the project, Cenovous no longer had to worry about the cost associated with downtime and the thawing of frozen instrumentation and valves.

 

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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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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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Epoxy Curing For Boats and Other Water Craft

To many people, summer means time on the lake or in the ocean boating or jet skiing. But have you ever stopped to consider how boats and other water craft are built? In almost every case, the high-tech water vessels of today use some form of fiber construction and epoxy curing.

 

Boats

Epoxy Construction on Water Vessels

Not everyone stops to think about how their jet ski was built when their speeding across the lake at 40 mph. Nor do many think about the same sort of thing as they’re sitting in their finely crafted boat, fishing or watching friends or family water ski. But such a thought is certainly worth addressing, even if it’s long before or after all the fun is over.

Unless you’re out enjoying the water in an older, traditional wooden or aluminum boat, you’re likely sitting in a piece of modern engineering, the type that involves high-quality plastics, glass fibers (sometimes referred to as glass-reinforced plastics – aka: fiberglass) and on some occasion, even carbon fiber. Most boats and jet skis these days are built using such composite materials. And where such composites as these exist, there’s also the need for some heavy-duty resins.

Composites such as fiberglass and carbon fiber are bound together using high-grade epoxy resins. These resins both bind and coat the material in a hard, nearly impervious shell—making for very strong construction. For those familiar with epoxy curing, it’s apparent that the primary challenge is temperature. Most epoxies cure well above room temperature, and when you’re dealing with construction as big as boats, such an endeavor becomes all the more difficult.

Some boat manufacturers take a lot of time and resources to construct large ovens or rooms in which they can pump heated air in order to bring the temperature up to the ideal range for epoxy curing. As you can imagine, such an undertaking requires a lot of patients, not to mention it creates a lot of downtime.

This is why Powerblanket is pleased to offer the boat-manufacturing world a much better solution. With Powerblanket curing blankets, a manufacturer can saves thousands of dollars and hours of time just on one boat build. Our curing blankets allow epoxy to cure at its ideal temperature for as long as needed. What’s more, Powerblanket curing blankets are available in ready-to-ship and customizable sizes and shapes.

 

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Curing Epoxy Resin On Wind Turbine Blades

Whether it’s for repair or initial construction, curing epoxy resin on wind turbine blades can be a tricky endeavor. However, with the right technology, this arduous process can be a whole lot easier.

 

Curing Epoxy Resin On Wind Turbine Blades

Wind Turbines: A Large Scale Application

The typical wind turbine blade ranges in length from 116 ft. to as much as 148 ft. That accounts for a big hunk of glass-fiber or carbon-fiber reinforced plastic. Either way you look at it, the curing process involved with such a beast is certain to take a lot of space. That’s why wind turbines are often created in pieces and then secured by joints.

Very strong, high-temperature epoxies are used for this process, but as anyone who’s worked with epoxy knows, the proper curing takes some extra heat. Can you imagine building a hot box around the joint of a turbine blade? Better yet, can you imagine having to stick that huge thing in an oven? The idea sounds ludicrous, and it is when you consider that there is a much better way of approaching the problem.

Instead of being left to the need of a hot box or an oven to properly heat cure epoxy resin on wind turbines, you could apply localized heat to the area that needs to be cured. That’s right, localized heat in the form of a revolutionary heat blanket that evenly distributes heat over the entire surface area of application. In addition to the amazing ability this blanket has of transferring heat, it also has the capability to regulate it.

By using thermostatic controllers, you can use such a blanket to cure epoxy at the ideal temperature. It’s simply a matter of setting the temperature range to the proper level for your application and then waiting for it to work its magic. With customization possibilities, this blanket is available in as many sizes as necessary, so you can cure even the largest cure joint. Shoot, you could even cure the whole blade if you want.

 

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Construction in the Cold

Everyone knows that construction season lasts as long as summer does, and there’s good reason for this. Construction and cold weather don’t usually get along. However, sometimes the project can’t wait for better temperatures. What do you do then?

 

Construction in the Cold 1Staying the Course

If you’ve ever had to work on a project that would have been so much easier if only you didn’t have to work on it in freezing temperatures, then you know how frustrating such an endeavor can be. In fact, most of the headache comes from your material’s sensitivity to cold. You can always add extra layers to ward off that bite in the air, but what do you do if you have to lay concrete, or store paint, or apply spray foam to a garage.

Well, thankfully, Powerblanket’s business is built on helping industries like construction make the most of cold weather. We can’t heat the air for you, but we can make sure that your materials are safe from the cold. After all, unless you’re building igloos, construction and cold don’t usually mix very well.

Powerblanket products are built with a patented technology that allows an even distribution of heat throughout the surface area. Whether you need to keep water-based paint from freezing in transport, or you need to heat a patch of concrete so that it can cure under less-than-ideal temperatures, Powerblanket’s got it covered—quite literally.

 

Construction in the Cold 2Powerblanket Products

A few of Powerblanket’s most useful product for the construction industry are our large multi-duty blankets and our foam cylinder and box warmers:

 

Multi-Duty and Extra-Hot Blanket

Powerblanket® Multi-Duty and Extra Hot blankets, built with patented technology, save money by not subjecting projects to costly cold weather delays

Foam Cylinder and Box WarmersConstruction in the Cold 3

Powerblanket® Drum and Bucket Warmers protect products by maintaining the desired temperature throughout an evenly heated area, thus reducing downtime. This keeps chemicals and other industrial materials within customer-defined temperature ranges, which means less overheating and burning of product.

 

Our products and uses don’t stop here, though. For more information on Powerblanket products, peruse our website or contact a Powerblanket rep today: 877-398-7407.

 

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