MANUFACTURING PROCESS OF FOAMING AGENTS
A foaming agent is an important ingredient for the production of lightweight concrete (FC). It must be well formulated and properly produced to provide a high quality product.
Foaming agents are usually used in combination with a variety of different fillers and additives to provide a particular set of characteristics for the final product. These may include but are not limited to, water absorption, strength development, freeze-thaw resistance and workability.
The amount of foaming agent in a concrete mixture can have an effect on the compressive strength of the final product. This is because foam concrete has an air void system that causes the density of the concrete to decrease with increasing levels of foaming. The use of foaming agents in concrete also reduces drying shrinkage by decreasing the pore connection between the aggregate and the foam pore.
Using Fibers in Foam Concrete
The use of fibers in foam concrete increases the rate of water absorption and can increase the strength of the final product. The addition of fibers can also be a good way to improve the workability and freeze-thaw properties of the final product.
Stability of a Concrete Mix with Different Types of Aggregate
The stability of foam concrete can be affected by the use of fine or coarse aggregate, as well as the type of cement used. The use of coarse aggregate increases the depth of defoaming and reduces the yield strength of the concrete. In contrast, the use of fine aggregate promotes a more uniform and stable air void system and increased density of the concrete.