What exactly is Foam Concrete and CLC Blocks?
CLC blocks are made from foam concrete. In this article we will explore the different kinds of foam concrete and where they are used. We will also discuss their strength and density. Aerated concrete blocks can be expensive as well as have limitations. If compared with conventional concrete blocks, CLC blocks are more affordable and require less capital expenditure. Furthermore, they are more durable than conventional concrete blocks. The initial investment necessary to start a CLC plant is much lower than that of aerated concrete plants.
The foam cement is what?
Foam concrete is a type made of lightweight concrete that has at least 20% 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 least 20% foam before it can be considered foam concrete. This type of concrete is a fantastic option for a variety of construction projects since it can cut down in terms of time and expense.
This lightweight concrete comes with a compressive strength that ranges from 5-8 MPa and a density of about 1000 kg/m3. It can be used to build houses because it can be used for strength as well as insulation. The lightweight concrete is normally created with a slurry of fly ash or concrete, in contrast, other manufacturers use only pure cement and water with the addition of a foaming component.
Another advantage for foam concrete is the fact that it doesn’t need to be compacted. The material is able to adhere to surface contours and lines that the subgrade. Because of this, it can be pumped for long distances at a low pressure. It’s also extremely durable and does not break down. However, foam concrete has a higher price than ordinary concrete.
Another benefit of foam concrete is that the material can reduce the weight of structures by as much as the amount of 80%. Due to the air content of the material there are air bubbles that are evenly distributed throughout the concrete. The size of these air bubbles can range between 0.1 to one millimeter. Foam concrete’s density can range between 400 and 1600 kg/m3. It offers a high level of fire resistance , and is an excellent thermal and acoustic insulator. Another benefit of foam concrete is that it requires zero compaction or vibrating.
Where can CLC blocks used?
Cellular Lightweight Concrete (CLC) blocks have numerous advantages over the traditional concrete blocks. These lightweight bricks possess a lower density because of their lower aggregate and cement content. They also perform better for sound and thermal insulation. These bricks are also of a wider design and dimension than traditional clay bricks. In the past recycling plastic and glass wastes were used to create cement additives to improve the compressive strength. It is vital to understand that the size of the particles in glass must not exceed 45 mm for it to function as a cement substitute.
Most often, CLC blocks are manufactured by using a sponging agent, which is combined with water and air. The mixture is then placed into molds. After the moulds are filled, the concrete mixture will take between 18 and 24 hours to fully harden. In some cases steam curing may be utilized to speed up curing. This curing method also can provide a better quality final appearance.
CLC blocks are constructed from polypropylene micro fibers. These fibers can be a trusted alternative to clay bricks and are an excellent choice for housing that is low-cost. Polypropylene micro fibers boost the peak performance of masonry and bricks. The product that is created has a density of approximately 2.8 N/m2 that is more than the typical concrete or brick.
CLC blocks also are environment sustainable. Because the blocks are constructed from recycled materials, they are not contaminated by harmful chemicals and don’t emit harmful pollutants into the air. Furthermore, they are great insulations and help lessen the dead load in a building. They save money on the cost of construction materials as well as energy bills for homeowners.
density and strength of foam concrete
The strength and density of foam concrete will be different depending on the kind of material employed. It is generally believed that foam concrete comprises cement as well as an aerogel. Due to its composition, foam concrete is prone to shrinkage in chemical form. In order to limit this, the mixture is secured with one or two layers of reactive powder concrete as well as mechanical connectors. In addition, additional substances can be added to the mix in order to improve the stiffness and strength.
Temperatures that are high can cause cracks in foam concrete. The higher temperatures, the greater cracks are likely to occur. A concrete specimen with 1,000 kg/m3 density has approximately one sixth of the thermal conductivity in normal concrete. Consequently, reducing the quantity of concrete can decrease the thermal conductivity by 0.04 W/mK.
Additionally, since foamed concrete is a brand new material, there aren’t tests that are standard for it. Therefore, the method for making specimens and testing them was based upon procedures to test ordinary concrete. For example, the compression strength of the concrete was measured according to PN – EN 12390-3 :2011 + AC:2012. Meanwhile, the degree of flexibility was determined according to the Instructions in the Research Building Institute No. 194/98. Diet of the foam was also determined by using PN-EN-12390-5:2011.
Strength and densities of the foam concrete are determined by the proportion of foam present in the mortar. Its components are composed of low-mass aggregates such as expanded clay pumice, and vermiculite. The density of a concrete is vital because it may affect the strength, the permeability, the thermal properties, and strength. The amount of admixtures in the concrete can affect the properties of the concrete.
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