This paper deals with the contribution of expanded polystyrene (EPS) particles on fire resistance, thermal
conductivity and compressive strength of foamed concrete. The foamed (FC) and polystyrene foamed
(PFC) concrete were designed for densities ranging from 1200 kg/m3 to 150 kg/m3 with an EPS volume
range of 0–82.22% and water-cement ratio of 0.33. The foamed concrete (FC) with a density of 800 kg/
m3 and an EPS volume of 0% was designed as reference for polystyrene foamed concrete. The results indicated
that increasing the volume of EPS causes a significant reduction of thermal conductivity, fire endurance
and compressive strength of concrete.