What is Foam Concrete and CLC Blocks
What is Foam Concrete and CLC Blocks?
CLC blocks are composed of foam concrete. In this article we will be able to learn more about the forms of foam concrete and the locations they are used. We will also know about their strength and density. Aerated concrete blocks are expensive as well as have limitations. If compared with conventional concrete blocks, CLC blocks are more affordable and have a smaller cost of capital. Moreover, they are more durable than traditional concrete blocks. But, the initial investment needed to begin one CLC plant is much lower than that of aerated plants.
Do you know what foam concrete means?
Foam concrete is a type made of lightweight concrete that has a minimum of 20% foam. It is also known under the terms Low Density Cellular Concrete, or the Lightweight Concrete. It is a cement-based slurry that has to contain at the least 20% foam in order to qualify to be considered a foam concrete. This type of concrete can be a wonderful option for a variety of construction projects since it can cut down on the cost of labor and materials.
This lightweight concrete has compressive strength of between 5-8 MPa and an density of approximately 1000 Kg/m3. It can be used to build a house because it offers both strength and insulation. It is generally manufactured using a slurry composed of cement or fly ash, while other vendors will use pure cement and water with an ingredient that foams.
Another benefit with foam concrete is that it doesn't need to be compacted. The material bonds to patterns of subgrade. Therefore, it can be pumped long distances, but with a very low pressure. It's also very strong and does not decompose. However, foam concrete costs more than normal concrete.
Another benefit that foam concrete has is that they can reduce the weight of structures by up to an 80%. Due to the air content of the material that is evenly distributed throughout the concrete. The size of these air bubbles can vary between 0.1 to one millimeter. The density of foam concrete ranges between 400 to 1600 kg/m3. It's got a very high level of fire resistance . It also serves as a good acoustic and thermal insulation. Another benefit to foam concrete is it demands not any compaction or vibration.
Where can CLC blocks utilized?
Cellular Lightweight Concrete (CLC) blocks are superior to traditional solid concrete blocks. These lightweight bricks have a low density due to their low cement and aggregate content. They are also better for thermal and sound insulation. Additionally, they have a wider shape and size than traditional clay bricks. In the past that used recycled plastic as well as glass wastes were utilized as cement additives to improve compressive strength. It is important to remember that the particle size of glass must be smaller than 45 millimeters for it to function as a cement substitute.
The majority of the time, CLC blocks are manufactured by using a sponging agent, which is mixed with air and water. This mix is then and poured into molds. When it's poured in, the mixture needs between 18 and 24 hours for it to cure. In some instances steam curing can be used for reducing the time required to cure. This method of curing gives a more polished look.
CLC blocks are constructed of polypropylene micro fibers. They provide a solid alternative to clay bricks and is a good choice to build low-cost homes. In addition, the polypropylene fibers enhance the performance of brick and masonry. The end product is characterized by a density of about 2.8 N/m2 that is more than that of typical concrete or brick.
CLC blocks also are environment friendly. Since they are made from recycled materials, they are not contaminated by toxic chemicals and do not emit any pollutants to the environment. Additionally, they're excellent insulators and can help decrease the dead load of a structure. They can save money on energy bills and construction materials for homeowners.
density and strength of foam concrete
The strength and density of foam concrete may differ depending on the type of material used. Generallyspeaking, foam concrete has cement as well as an aerogel. Because of its composition foam concrete is susceptible to shrinkage in chemical form. To avoid this, the mix is secured with the addition of two to three layers of powder concrete and mechanical connectors. The addition of additional materials to the mix to increase its stiffness and strength.
Temperatures that are high can cause cracks in concrete foam. The higher heat, more the cracks will occur. A concrete sample having 1,000 kg/m3 of density has about one sixth of the thermal conductivity of normal concrete. In turn, reducing the density reduces the efficiency of thermal radiation by 0.04 W/mK.
Furthermore, because foamed concrete was a relatively new material, there are no standards for testing it. The procedure of making the specimens for testing it was based on the procedures for regular concrete. For instance, the compression strength of the concrete was determined according to PN-EN 12390-3:2011 + AC:2012, while the modus of elasticity of the concrete was measured according to the Instructions from the Research Building Institute No. 194/98. The foam's density was also determined using PN -EN 12390-5.
Foam concrete's density and strength are dependent on the percentage of foam in the mortar. Its composition is composed of low-mass aggregates, such as expanded clay pumice, vermiculite and so on. The density of concrete is critical because it influences the strength, the permeability the thermal properties, and strength. The amount of admixtures that are used in concrete can alter the properties of the concrete.
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