An experimental investigation on improving properties of expanded polystyrene concrete (EPS-C)
Expanded polystyrene concrete (EPS-C) is a lightweight, low strength material with high energy-absorption characteristics. However, due to the light weight of EPS beads and their hydrophobic surface, EPS-C is prone to segregation during mixing and producing, which results in poor workability and lower strength. In this study, the effect of polystyrene breads contents, different particle sizes of polystyrene, period of vibration and polypropylene fiber contents on compressive strength of concrete are experimentally investigated. The research show that the compressive strength of concrete decreases when vibration period increases. The EPS concrete with a density of 650-900 kg/m3 and a compressive strength of 3-7.5 MPa can be made by using EPS beads. Morover, the addition of polypropylene fiber significantly improves the compressive strength of concrete.
Received: January 17th, 2018; revised: January 12th, 2018; accepted: February 28th, 2018