3. Experimental procedures
3.1. Compressive strength
The unconfined compressive strength of foamed and polystyrene
foamed concrete was evaluated after 28 days with
100 200 mm standard cylinders as per ASTM C39 [131] at the
loading displacement rate of 0.1 mm/s. The specimens were
demolded after 24 h and kept in water curing at 20C for the whole
curing period. The compressive tests were conducted on foamed
concrete with densities of 1200, 1000 and 800 kg/m3 along with
polystyrene foamed concrete with densities of 150, 200, 250 and
400 kg/m3