1) Introduction                                              

2) Definition

3) Materials and production

4) Properties of foam concrete

5) Advantages of foam concrete

6) Operational Efficiency

7) Applications

8) Conclusion

9) Reference


One of the methods of reducing the density of concrete relies on the introduction

of stable voids within the hardened cement paste or mortar. The voids can be produced by

gas or by air. Because a foaming agent introduces the air, the concrete produced is called

foam concrete.

Foam concrete is a vast majority of concrete containing no large aggregates, only

fine sand and with extremely lightweight materials containing cement, water and foam. It

can be considered relatively homogeneous when compared to normal concrete, as it does

not contain coarse aggregate phase. However, the properties of foamed concrete depend

on the microstructure and composition, which are influenced by the type of binder used,

methods of pre-foamation and curing The main advantage of foam concrete is its

lightweight, which ensures economy of walls of the lower floors and foundations. It has

several advantages and since it is porous in nature, it provides thermal insulation and

considerable savings in the material. The important applications of foamed concrete

include structural elements, non-structural partitions and thermal insulating materials.

Manufacturers developed foam concretes of different densities to suit the above

requirements and these products were used in trench reinstatement, bridge abutment, void

filling, roof insulation, road sub base, wall construction, tunneling etc.