What are Cement Blankets? Why does Ghana need them?

What are Cement Blankets?

Cement is an amazing construction material that has been used throughout the world for many centuries. It is used to construct everything from bridges, dams and structures to roads for residential houses and walkways, sidewalks, patios, and more. Even tiny decorative elements such as cast countertops and fireplace surrounds are constructed from concrete.

Concrete is extremely durable, inexpensive, easily accessible and very easy to create. Mix sand, stone aggregate and cement with water to make concrete. Cement is the key ingredient that chemically interacts with water to make it harder and make the mix stronger. Curing is a process that can take up to 28 days for the process to be complete. When curing is complete the concrete is dried out and gets stronger. However, for this to happen it must not be too cold, or the concrete will become frozen. Concrete blankets are used for.

Geonor Concrete Blanket distributed by HTC Ghana

Curing blankets made of concrete are crucial for those working in cold temperatures. If temperatures fall below 4 degrees Celcius the concrete mixture may freeze and cause structural damage. While curing, concrete is heated from within. Concrete blankets hold heat in while keeping cold out. They keep freezing of water, which allows curing to take place. This is the reason they’re known as curing blankets. They’re mostly thick, blankets that are insulated, but some come with electric heaters. They are able for keeping concrete warm when the insulation isn’t enough.

We’ll go over the reasons why concrete might require curing blankets, and when and how you can use curing blankets.

Why are Cement blankets needed?

The temperature can have a major influence on the concrete it cures. In warmer climates, a blanket of concrete isn’t required since the temperature needed for curing is already right. However, what happens in the Northeast where the temperature is often below freezing in states such as Alaska which are usually too cold for concrete to be used. Not only are working conditions freezing, but the concrete mix itself may become frozen. To avoid this happening, Cement blankets protect the concrete to keep it warm.

About 15 to 20 percent of the concrete mix is water. In the process of curing most of that water evaporates slowly as the concrete stretches. When concrete cools it’s strength is dramatically diminished. The concrete’s water expands when it is frozen, and damages the design of the concrete. Water may expand 10 percent when it is frozen. This causes internal bonds to break and causes concrete to become brittle and fragile. In extreme instances, the concrete could even degrade and then return to its powder.

Geonor Concrete Blanket distributed by HTC in Ghana

It is recommended to avoid freezing for at least the initial couple of days after concrete has been put in. In addition, it should be avoided during the initial couple of hours while the concrete mixture remains wet. The more water that is in the concrete, the more damage could occur following the freezing process.

How to use Cement Blankets?

The use of a blanket made of concrete is very easy to make. It’s as simple as placing them on the concrete. There are some things to think about when choosing the appropriate blanket.

The first thing to consider is the temperatures of the ground as well as the conditions. Make sure to go for the day that is warm and in the moment in the day when it’s the warmest. The temperature of the air is simple to calculate, however for the ground, we employ an instrument for measuring temperature. You can point it at ground and it’ll tell you the temperature. In some concrete projects that are that are extremely cold, you might require warming the surface first. Electric concrete blankets work great to do this. Simply lay them on the floor and plug them into the outlet and the blankets will take care of everything.

The next step is to determine the amount of insulation is required. Most of the time, a single blanket will be enough , however for certain tasks heating electric blankets, or even multiple layers might be required.

The majority of us put more blankets on the corners and edges. This is where the majority of the heat loss you experience will take place because it’s near to the ground. You can choose to buy more thick blankets or pile them on top of one the other.

Curing blankets are available in a range of sizes. Be sure to have enough blankets to cover the entire surface. Check your seams. If you are paying for the blankets, the entire concrete must be completely covered. It’s easy to overlook an area of seam in the middle or elsewhere, so lay the blankets carefully. If there’s even just a small space of concrete exposed, the heat can escape.

Benefits of using Cement Blankets?

Concrete is affected by the surroundings where you place it. The ideal temperature to pour concrete is about 21 degrees C. It should not be too wet or humid. If it’s too humid , the concrete may have problems in vaporizing its water, too dry, and it might evaporate too quickly. In the event that it’s too hot, you’ll have rapid drying or too cold and you’ll experience freezing issues. It’s not as easy to pour concrete into the elements. However, concrete blankets can be helpful.

If it’s cold outside Curing blankets can ensure that temperatures remain where you require they. They also help keep moisture away from the surface, aid in regulating the evaporation process and keep concrete dry from external water such as snow or rain. Since most concrete blankets are waterproof, they can also function as a barrier to vapor.

  • Curing blankets permit concrete work to be completed in cold temperatures.
  • They are available in a variety of size and R-Values.
  • Some are heated , which is fantastic if you require more warmth or work in a cold climate.
  • Folds easily to move and reuse.
  • Accelerate the speed at which concrete cures are effective.
  • Strong and durable.
  • Simple to make use of. You just need to place these on top of concrete.

Other uses for Cement Blankets:

Curing blankets are mostly employed to cure concrete however, they can also be utilized to maintain the temperatures of the ground or other building materials such as stone and brick.

Pouring concrete on subgrade that is frozen like sand or gravel is not a good idea. Once the concrete is poured it begins to cool rapidly and may even freeze. It’s like pouring liquid in the glass that has been frozen. It can also cause any frozen water that is trapped in the ground to melt and expand, which could make the ground uneven. If the ground is uneven, it can create a weak point in which concrete may crack. The blanket that is laid across the surface for some time prior to pouring could help control the temperature. It is even more convenient when the blanket is electrical.

Cement blankets are an excellent method of preparing cold soil for digging. This is especially beneficial for digging by hand. The frozen top of soil can be extremely difficult to dig through, even using machines. Stone and brick work uses cement to join materials. The cold can be as damaging in this area as it is for pouring concrete. Cement will not bind bricks and stone in the event of a cold winter. A warm blanket may occasionally aid.

To prevent freezing of water is another excellent reason to make use of concrete blankets. Particularly if the blankets are heated. Lay them on pipes or water buckets to prevent the freezing. A concrete blanket can be used to create a water barrier. Most concrete blankets are water-proof. Spread them over whatever you’d like to keep dry. Think of baggies of Quikrete.

FAQ:

1. Why do you use Cement blankets?

Concrete blankets trap heat and keep cold out. They keep freezing of water, which allows curing to take place. This is the reason they’re known as curing blankets.

2. What is cement blanket?

Concrete curing blankets aid in keep the heat of hydration in check in the beginning stages of concrete curing . They also guard against the colder temperatures. Curing blankets can also be used to cover scaffolding and ground.

3. Are Cement blankets reusable?

The fact that it’s not recyclable makes it simple to cross-contaminate between slabs and be eliminated. Insulated curing blankets are non-pigmented, non-woven polypropylene product which is responsible for keeping moisture.

4. What temperature does cement need to cure?

Concrete should be dried at a temperature of 10 to 32 degrees C. Concrete should not be cured at temperatures above 10 degrees C, but must be cured and maintained at 10 degrees C.

5. Why does Ghana need Cement blankets?

Cement Blanket (also known as concrete blanket) can be widely used in the fields of water conservancy, railway, highway, environmental management, slope protection, structural protection, etc. It last longer than any other application previously used for these projects. It is cheaper in long term and provides lifelong waterproofing. Ghana can benefit with such an amazing product for all government and private projects.

Find more info here.

Call us at:

● TAMALE: +233 54 444 4290 / +233 54 013 1112
● ACCRA: +233 55 266 1304 / +233 54 010 3999
● TARKWA: +233 55 266 1304 / +233 55 044 8165
● TAKORADI: +233 55 044 8165
● HO: +233 54 013 1113
● WA: +233 54 013 1114

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