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What exactly is Foam Concrete and CLC Blocks?
CLC blocks consist of foam concrete. In this article, we’ll learn more about the types of foam concrete as well as how they are utilized. Additionally, we will discuss their density and strength. Aerated concrete blocks are expensive and are subject to certain limitations. If compared with conventional concrete blocks, CLC blocks are more affordable and have a lower amount of capital investment. Additionally, they are more robust than concrete blocks of the conventional variety. However, the initial capital investment required to set up an CLC plant is lower than that of aerated plants.
How do you define foam concrete?
Foam concrete is a sort of concrete that is light and has a minimum of 20 percent 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 have at least 20% foam to be considered as foam concrete. This kind of concrete is an excellent alternative for numerous construction projects due to its ability to save on both labor and expenses.
This lightweight concrete has a compressive strength of between 5 and 8 MPa with a density of about 1000 kg/m3. It is a great material for building a home because it is strong and provides insulation. The lightweight concrete is normally constructed using a mix of cement or fly ash, however, some vendors use the pure cement along with water that has the addition of a foaming agent.
Another benefit for foam concrete is the fact that it does not require compacting. The material bonds to contours of the subgrade. It can be pumped over long distances, but with a very low pressure. It’s also extremely durable and won’t break down. However, foam concrete can be more costly than normal concrete.
Another advantage from foam concrete is that the material can reduce the structure’s weight by up to 80percent. Because of the air content of the material it is possible to have air bubbles evenly all over the body of the material. The size of these air bubbles can range from 0.1 to 1 millimeter. The density of foam concrete ranges between 400 and 1600 kg/m3. It is a good level of fire resistance . It’s also a good acoustic and thermal insulation. Another benefit associated with the foam is that the concrete requires no compaction or vibration.
Where are CLC blocks utilized?
Cellular Lightweight Concrete (CLC) blocks have numerous advantages over regular concrete blocks. They are light bricks with a low density due to their lower aggregate and cement amount, and also are better in thermal and sound insulation. Furthermore, they are of larger form and larger size than traditional clay bricks. In past studies that used recycled plastic as well as glass scraps were used as cement additives for enhancing the compressive strength. It is vital to understand that the particle size of glass must be smaller than 45 millimeters to be effective as a substitute for cement.
The majority of the time, CLC blocks are manufactured with a foaming agents that is mixed with water and air. This mix is then placed into molds. After the moulds are filled, the concrete mixture takes between 18 and 24 hours for it to cure. In some instances steam curing may be utilized to speed up curing. This method of curing improves the result.
CLC bricks are made from polypropylene micro fibers. They provide a solid alternative to clay bricks . It is an ideal choice for low-cost housing. Polypropylene micro fibers increase the performance of brick and masonry. The final product has the density of 2.8 N/m2 and is greater than the normal brick or concrete.
CLC blocks are environmentally sustainable. Since they are made out of recycled materials, they are not contaminated by harmful chemicals and don’t discharge pollutants into the surroundings. They are also great insulators , and they help reduce the dead load of buildings. They can save money on the cost of construction materials as well as energy bills for home owners.
the strength and density of foam concrete’s strength and density
The strength and density of foam concrete may differ based on the type of material that is used. It is generally believed that foam concrete comprises cement and an aerogel. Because of its chemical composition, foam concrete is susceptible to chemical shrinkage. To reduce this, the mixture is restrained with several layers of non-reactive powder concrete and mechanical connectors. Additional materials can be added to the mix to increase its stiffness and strength.
The high temperatures can cause cracks in foam concrete. The greater heat, more cracks can occur. A concrete sample having 1,000 kg/m3 density has about one sixth of the thermal conductivity in normal concrete. As a result, reducing the density will decrease the heating conductivity by 0.04 W/mK.
In addition, because the foamed concrete material is a novel substance, there aren’t standardized test methods for it. As a result, the procedure of making the specimens for testing them was based in the same way as tests to test ordinary concrete. For example, the compression strength of the concrete was determined following PN-EN 12390-3, 2011 + AC:2012, while the degree of flexibility was measured as per the Instruction to the Research Building Institute No. 194/98. Density of foam also calculated using PN EN 12390-5.
Its strength as well as density are dependent on the percentage of foam that is present in the mortar. Its composition is composed of low-mass aggregates like expanded clay vermiculite, as well as pumice. The density of a concrete is vital because it may affect its strength, flexibility along with its thermal property. Additive amounts can also drastically change its properties.
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