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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 know more about the various types of foam concrete, as well as where they are utilized. We will also discuss their density and strength. Aerated concrete blocks are expensive and come with some limitations. If compared with conventional concrete blocks, CLC blocks are more affordable and require less expense of capital. Furthermore, they are more durable than traditional concrete blocks. However, the initial amount required to start a CLC plant is less than the cost of aerated concrete plants.

Foam concrete is what it is.

Foam Concrete is a kind of concrete that is lightweight and contains at least 20 percent of foam. It is also referred to by the name Low Density Cellular Concrete, or L-C Concrete. It is a cement-based slurry which must contain at least 20% of foam to be considered foam concrete. This kind of concrete is an ideal option for many construction jobs as it helps save in terms of time and expense.

This lightweight concrete comes with a compressive strength of between 5 and 8 MPa. Its density is around 1000 Kg/m3. It can be used to build homes since it's strong and offers insulation. The lightweight concrete is normally made by mixing a slurry with fly ash and cement, however, some vendors use pure cement and water , along with foaming agents.

Another benefit with foam concrete is that it doesn't require compacting. The concrete sticks to the patterns of subgrade. Therefore, it can be pumped for long distances, but with a very low pressure. It's also extremely strong and does not decompose. However, it may be more costly than ordinary concrete.

Another advantage for foam concrete is that they can reduce the weight of structures by up to 20%. Because of its air content the air bubbles are evenly spread throughout the concrete. The size of the air bubbles can range between 0.1 to 1 millimeter. In terms of density, foam concrete ranges between 400 to 1600 kg/m3. It's got a great level of fire resistance , and is an excellent thermal and acoustic insulator. Another advantage with foam cement is that it needs minimum compaction and no vibration.

Where are CLC blocks used?

Cellular Lightweight Concrete (CLC) blocks have a variety of advantages over solid concrete blocks that are typically used. They have a low density due to their lower aggregate and cement content. They also perform better for thermal and sound insulation. The bricks also come in a wider dimension and shape than traditional clay bricks. In the past recycled plastic and glass wastes were utilized as cement additives for enhancing the compressive strength. It is imperative to realize that the particle size of glass should be less than 45 millimeters to be effective as a substitute for cement.

In general, CLC blocks are manufactured using a foaming ingredient that is mixed with air and water. The mix is then and poured into molds. When it's poured in, the mixture takes between 18 and 24 hours for it to cure. In certain cases, steam curing is used to speed up curing. This type of curing helps to give a better look.

CLC blocks are constructed from polypropylene microfibers. The fibers offer a dependable alternative to clay bricks . It is an ideal choice for low-cost housing. Furthermore, polypropylene fibers improve the peak behaviour of brick and masonry. The end product is characterized by an average density of 2.8 N/m2 which is more than the average concrete or brick.

CLC blocks also are environmental sustainable. Since they are made out of recycled materials, they are not contaminated by harmful chemicals , and they do not discharge pollutants into the surroundings. Furthermore, they're great insulators , and they help lower the dead load of buildings. They help save money on the cost of construction materials as well as energy bills for house owners.

Density and strength of foam concrete

The strength and density of foam concrete differ based on the type of material used. The most common ingredient in foam concrete is cement and an aerogel. Because of its chemical composition, foam concrete is prone to shrinkage in chemical form. To reduce this, the mixture is confined by 2 or 3 layers of physically reactive concrete as well as mechanical connectors. The addition of additional materials to the mix in order to improve its strength and stiffness.

High temperatures can cause cracks in concrete foam. The higher heat, more cracks will develop. A concrete specimen with 11,000 kg/m3 of density contains about one-sixth the thermal conductivity of a normal concrete. Therefore, reducing the density of the concrete will reduce its temperature conductivity of the concrete by 0.04 W/mK.

In addition, because foamed cement is a brand-new product, there's not any standardized test procedures for it. This is why the procedure for preparing samples and testing they were based on tests that are used for conventional concrete. For instance, the compression strength of the concrete was measured using PN-EN12390-3:2011 + AC:2012. Meanwhile, the coefficient of elastic modulus calculated as per the instructions that is part of the Research Building Institute No. 194/98. The foam's density was assessed using the PN-EN12390-5:2011.

A concrete's durability and hardness are dependent on the amount of foam that is present in the mortar. Its composition is comprised of low mass aggregates such as expanded clay, pumice, and vermiculite. The density of concrete is critical because it can impact its strength, strength, andpermeability, and thermal properties. The amount of additives can also drastically change its properties.

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