Foam Concrete: A State-of-the-Art and State-of-the-Practice Review

Table 5

Pore features achieved by different foaming methods [26].

Foaming method	Diameter of pores (mm)	Volume of air voids	Shape	Density (kg/m^3)
Chemical foaming: gas release	0.5–3.0	15–65%	Spherical	Typical AAC: 300–800
Mechanical foaming: High shear mixing or prefoaming	0.1–1.0	10–50%	Less spherical, with shape factor 1.2–1.4	400–1600