ABSTRACT
Foamed concrete (or cellular concrete) is a lightweight cellular material produced by introducing sufficient quantities of stable air pores into net cement paste or fresh mortar consisting of cement paste and fine aggregate (the latter only for dry densities over approx. 500 kg/dm3). In special cases, coarse lightweight aggregate can also be included, giving higher strengths as compared with foamed concrete of the same density without coarse lightweight aggregates. Normal-weight coarse aggregate is usually not used, because of the high risk of segregation due to the large differences in density of the light matrix and the aggregate grains.
