Experimental Research And 3D Modeling Of EPS Cellular Concrete

Modern concrete materials are becoming more lightweight, with higher strength and better performance. It is popular to replace coarse aggregate with lightweight filler or induce closed-celled bubble to reduce the self-weight of concrete. Therefore, a certain amount of admixture of EPS (Expanded Polystyrene) granule into concrete is suitable to fabricate EPS concrete material with super lightweight, large deformation, vibration isolation, anti-seismic and excellent thermal isolation properties. Because its good properties in engineering application, EPS concrete are becoming hotspot in engineering field with great technology and social meaning, which will also do good to pollution reduction and waste recycling.In this paper, plenty of research results on cellular solid and EPS concrete properties are referenced to carry out the research work on EPS concrete as a kind of cellular solid. Experimental and numerical researches are performed, and the details are descriped below:(1) Super lightweight EPS cellular concrete with bulk density less than 800 kg/m3 were fabrcated. The effect to its bulk density, compressive strength, elastic modulus, stress-strain curve, energy absorption was discussed in the way of cellular solid.(2) Homogenization method was induced to make it reasonable to analysis the representable volume element (RVE). Monte Carlo algorithm and Kepler Face-Centred-Cube structure were utilized to model such RVE in ANSYS preprocessor. APDL script was proved efficient to model RVE with both low and high porosity to describe real structure.(3) RVE of EPS cellular concrete was analysised by analog loading based on elastic damage model and the stress-strain curve of matrix. Elastic modulus, compressive strength, stress-strain curve and strain intensity distribution was derived. The conclution showed that numerical simulation of EPS cellular concrete is feasible, and the result is suitable as reference to experimental research, as well as the explanation of some experimental phenominon.