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What is Foam Concrete and CLC Blocks

What exactly is Foam Concrete and CLC Blocks?

CLC blocks are made of foam concrete. In this article we will learn more about the types of foam concrete as well as the places they can be used. Also, we will learn about their strength and density. Concrete blocks that are emulsified are costly and come with some limitations. When compared to conventional concrete blocks, CLC blocks are more affordable and require less costs of capital. Moreover, they are more durable than traditional concrete blocks. However, the initial amount needed to begin the CLC plant is less than that of aerated plants.

Which is the foam-concrete?

Foam concrete is a type made of lightweight concrete that has at least 20 percent of foam. It is also known in the industry as Low Density Cellular Concrete, or Leichter Cellular Concrete. It is a slurry made of cement that must contain at minimum 20% of foam to be considered a foam concrete. This type of concrete is a great option for many construction jobs as it is able to save on costs and labor.

The concrete is lightweight and has a compressive strength that ranges from 5-8 MPa. It has a density approximately 1000 kg/m3. It can be used to construct a house since it's strong and offers insulation. The lightweight concrete is normally created using a slurry made of fly ash or concrete, however, some vendors use the pure cement along with water that has an ingredient that foams.

Another advantage with foam concrete is that it doesn't require compacting. The material sticks to the lines of the subgrade. This means it can be pumped long distances using relatively little pressure. Also, it is extremely durable and won't break down. However, it may be more costly than regular concrete.

Another advantage with foam concrete that it can reduce the structure's weight by up to an 80%. Due to the air content of the material the air bubbles are evenly all over the body of the concrete. The size of these air bubbles can range from 0.1 to one millimeter. Foam concrete's density is between 400 to 1600 kg/m3. It offers a high level of fire-resistance and is a good acoustic and thermal insulator. Another benefit from foam concrete is that it needs the least amount of compaction and vibration.

Where can CLC blocks employed?

Cellular Lightweight Concrete (CLC) blocks have numerous advantages over traditional solid concrete blocks. These lightweight bricks possess a lower density because of their low cement and aggregate contents, and are more suitable in thermal and sound insulation. Furthermore, they are of wider design and dimension than traditional clay bricks. In the past recycled plastic and glass materials were used as cement additives to improve compressive strength. It is imperative to realize that the size of the particles in glass must not exceed 45 millimeters in order to be effective as a cement substitute.

The majority of the time, CLC blocks are manufactured by using a foaming substance that is mixed with air and water. The mixture is then placed in molds. Once it has been poured, concrete mixture needs between 18 to 24 hours to harden. In some instances the use of steam curing to speed up curing. This curing method also provides a better result.

CLC blocks are constructed from polypropylene micro fibers. They are a reliable alternative to clay bricks and is a good choice for homes that are low-cost. Furthermore, polypropylene microscopic fibers boost the peak performance of brick and masonry. The final product has the density of 2.8 N/m2 This is significantly more than that of typical concrete or brick.

CLC blocks also are eco friendly. Since they are made of waste materials, they are not contaminated by harmful chemicals , and they do not release pollutants into the atmosphere. Furthermore, they are excellent insulators and can help lessen the dead load in an entire building. They save on building materials and power bills for homeowners.

strength and density of foam concrete's strength and density

The strength and density of foam concrete will vary based on the type of material that is used. In general, foam concrete is composed of cement and an aerogel. Because of its chemical composition, foam concrete is susceptible to chemical shrinkage. To minimize this, the mixture is restrained with one or two layers of reactive concrete as well as mechanical connectors. Add additional materials to the mix to increase the stiffness and strength.

Cracks can form when temperatures rise in concrete foam. The higher heat, greater cracks can occur. Concrete with the density of 1000 kg/m3 has roughly one-sixth the thermal conductivity as a normal concrete. Accordingly, reducing its quantity of concrete can decrease the thermal conductivity by 0.04 W/mK.

Furthermore, because foamed concrete was a relatively new material, there aren't standard test procedures for it. In the end, the method for making specimens and testing they were based on tests to test ordinary concrete. For example, the compression strength of the concrete was determined according to PN-EN 12390-3:2011 + AC:2012. Additionally, the modulus of elasticity was measured according to the Instruction that is part of the Research Building Institute No. 194/98. The density of the foam was determined by using PN-EN-12390-5:2011.

A concrete's durability and hardness is determined by the proportion of foam present in the mortar. Its composition consists of low-mass aggregates, such as expanded clay pumice, vermiculite and so on. The density of a concrete is important as it influences the strength and permeability, in addition to its thermal and mechanical properties. The amount of admixtures can significantly alter its properties.

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