Review on performance and sustainability of foam concrete

Abstract

Due to a wide range of foam concrete applications in the field of construction industry like creating cast-in-situ elements, precast blocks and prefabricated insulation boards, the performance and durability of foam concrete has become an important area of research. Few advantages of using foam concrete are, doesn’t impose heavy loads, enables fast work, low absorption over time, pumpability, resistance to freeze thaw cycle, non-toxic and non-hazardous. Foam concrete is prepared using foam, cement, water and with or without using sand. Foam concrete doesn’t contain coarse aggregate thus, extending dry densities from 300 to 1600 kg per cubic meter which possess low density and high strength-to-weight ratio. The porous structure forms the base of mechanical and durability properties beside excellent sound and temperature barrier.This paper delivers a comprehensive review on creating good performance and sustainable foam concrete in terms of high porosity, low aggregate consumption, compressive strength, fire resistance, thermal insulation and sound absorbance. Discussion on type of foaming agent used, admixtures, fresh state properties, physical properties, mechanical properties and durability properties were studied. Based on the findings, it is clear that further research is needed into the properties linked with long-term performance and enhancement of foam concrete. This study can aid users in easing their concerns and encouraging further widespread use of foam concrete in civil engineering.