Preparing and Impact Resistance Properties of Lightweight Material with Cement and Expanded Polystrene

Abstract:

A lightweight material with cement and expanded polystyrene (EPS) is prepared by compressing semi dry materials molding. The stress strain curve is achieved by compression test. The absorptions of impact force and impact energy during impaction are tested by a self made device when two different impact energies are applied. Relationship between impact force absorption, impact energy absorption and cement dosage is analyzed. Effect of fiber and latex on absorption is discussed. The results figure out that this material has a different fracture from normal EPS concrete. Upon compression, the material will reach strain of 0.6 without brittle fracture which represents brilliant toughness. Impact force absorption decreases first and then increases with the rising of cement dosage, while adding fiber and latex can lead to higher absorption. Impact force absorption increases first and then decreases with the rising of cement dosage, while adding fiber and latex can lead to higher absorption on low cement dosage but lower absorption on high cement dosage. The influence law and mechanism of various factors are analyzed in detail.

Key words:cement; expanded polystyrene; compress semi dry materials molding; impact resistance properties