What is Foam Concrete and CLC Blocks
What is Foam Concrete and CLC Blocks?
CLC blocks consist of foam concrete. In this article, we'll know more about the various types of foam concrete and where they are used. In addition, we will know their strength and density. Aerated concrete blocks are expensive and have certain limitations. If compared with conventional concrete blocks, CLC blocks are more affordable and have a smaller expense of capital. In addition, they're more durable than traditional concrete blocks. However, the initial cost required to start an CLC plant is lower than that of aerated plants.
Do you know what foam concrete means?
Foam concrete is a form made of lightweight concrete, which contains at least 20 percent foam. It is also known in the industry as Low Density Cellular Concrete or Lightweight Cellular Concrete. It is a cement-based slurry which must contain at least 20% foam in order to qualify to be considered to be foam concrete. This kind of concrete is a fantastic alternative for numerous construction projects since it can cut down on the cost of labor and materials.
The concrete is lightweight and has a compressive strength of between 5 and 8 MPa. It has a density around 1000 kg/m3. It is a great material to construct a house since it can provide strength and insulation. The lightweight concrete is normally created with a slurry of cement or fly ash, and other companies will make use of pure cement and water with the addition of a foaming agent.
Another benefit to foam concrete is it does not need to be compacted. The material is able to adhere to lines of the subgrade. It can be pumped over long distances while requiring only a small amount of pressure. Also, it is extremely durable and will not break down. However, it will cost more money than ordinary concrete.
Another benefit in foam concrete's use is that they can reduce the weight of structures by as much as up to 80%. Due to its air content the air bubbles are evenly spread throughout the concrete. The size of these air bubbles can vary from 0.1 to one millimeter. In terms of density, foam concrete can range between 400 to 1600 kg/m3. It is a good level of fire resistance and is a good acoustic and thermal insulator. Another benefit associated with the foam is that the concrete requires the least amount of compaction and vibration.
Where are CLC blocks utilized?
Cellular Lightweight Concrete (CLC) blocks offer a number of advantages over conventional concrete blocks. The lightweight bricks have lower density because of their aggregate and cement contents, and are more suitable for thermal and sound insulation. They also have a larger design and dimension than traditional clay bricks. In previous studies that used recycled plastic as well as glass scraps were used as cement additives to increase compressive strength. It is important to remember that the size of the particles in glass needs to be less that 45 mm for it to be effective as a cement substitute.
Usually, CLC blocks are manufactured by using a sponging agent, which is combined with air and water. This mixture is later and poured into molds. After the moulds are filled, the concrete mixture requires between 18 and 24 hours for it to cure. In certain cases steam curing is employed to speed up curing. This method of curing improves the finishing.
CLC bricks are made of polypropylene micro fibers. These fibers are a reliable alternative for clay bricks. CLC blocks are an excellent choice for affordable housing. Furthermore, polypropylene microscopic fibers enhance the performance of masonry and bricks. The resultant product has a density of about 2.8 N/m2 that is more than the average concrete or brick.
CLC blocks are also environment friendly. Since the blocks are made from waste materials they are not contaminated by damaging chemicals and emit pollutants into the environment. Additionally, they are also fantastic insulators that help lessen the dead load in a building. They save on building materials and energy costs for house owners.
the strength and density of foam concrete
The strength and density of foam concrete depend on the type of material used. The majority of foam concretes contain cement as well as an aerogel. Because of its composition, foam concrete is susceptible to shrinkage in chemical form. In order to minimize this, the mix is confined by one or two layers of reactive powder concrete and mechanical connectors. Additional materials can be added to the mix to increase the stiffness and strength.
Temperatures that are high can cause cracks in foam concrete. The higher temperatures, the greater cracks can occur. A concrete sample with a density of 1000 kg/m3 is about one-sixth of the thermal conductivity of normal concrete. Thus, reducing density of the concrete will reduce its temperature conductivity of the concrete by 0.04 W/mK.
In addition, because the foamed concrete material is a novel material, there isn't standardized test methods for it. Thus, the process of making samples and testing their properties was based off procedures of ordinary concrete. For instance, the compression strength of the concrete was measured as per PN EN 12390-3:2011 AC:2012. Furthermore, the flexibility modulus was measured by reference to the instructions to the Research Building Institute No. 194/98. It was also determined using PN-EN 12390-5:2011.
Foam concrete's density and strength is dependent on the amount of foam in the mortar. Its components are composed of low-mass aggregates like expanded clay, vermiculite, and pumice. The density of concrete is crucial because it influences the strength of it, its permeability, the thermal properties, and strength. The amount of admixtures in the concrete can also drastically change its properties.
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