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Cement for Foam Concrete

Ordinary Portland cement is commonly used, but rapid-hardening cement can be used if necessary. Foam concrete can incorporate a wide range of cement and other combination, for example, 30 percent of cement, 60 percent of fly ash, and limestone in 10 percent. The content of cement range from 300 to 400 kg/m3. Sand for Foam Concrete: The maximum sand size used is 5mm. Use finer sands up to 2mm with the amount passing through a 600-micron sieve ranging from 60 to 95%. Pozzolanas: Supplementary cementitious materials like fly ash and ground granulated blast furnace slag have been used widely in manufacturing foam concrete. The amount of fly ash used ranges from 30 to 70 percent. White GGBFS range from 10 to 50%. This reduces the amount of cement used and is economical. Silica fume can be added to increase the strength; at 10 percent by mass. Foam: The hydrolyzed proteins or synthetic surfactants are the most common forms based on which foams are made. The synthetic-based foam agents are easier to handle and are cheap. They can be stored for a longer period. Lesser energy is required to produce these foams. The protein-based foam is costly but has high strength and performance. The foam can be of two types: wet foam and dry foam. Wet foams with densities lesser than 100 kg/m3 are not recommended for manufacturing foam concrete. They have a very loosely placed large bubble structure. To a fine mesh, the agent and the water are sprayed. This process produces foam with bubbles ranging from 2 to 5mm. Dry foam is highly stable. A solution of water and the foaming agent is forced by restrictions into a mixing chamber by compressor air. The produced foam is a bubble size smaller than the wet foam. That is less than 1mm. These give a structure of bubbles. If you are looking for high quality, high purity, and cost-effective Cement foaming agent, or if you require the latest price of Cement foaming agent, please feel free to email contact mis-asia.

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