Study On A New Type Thermal-Insulating And Energy-Saving Complex Wall

This paper develops a new type thermal-insulating and energy-saving wall out of polystyrene-cement heat preservation blocks which feature hollow cores bored horizontally and vertically along their length. When one row of blocks is placed atop another and glued into place, concrete can be poured through the cores and inserts rebar to create a stable wall. We call it Multi-hole shear wall because of its character. The matrix of concrete is the bearing member; while blocks remain in place providing a super energy efficient. So this can save mould boards and ensure integrity of the system. The studying work is as following:1 .Based on a mount of tests centering on mix proportion, variety and added quantity of cement, filler aggregate, granular and morphology of EPS on polystyrene concrete properties are analyzed. The main target is to find the bond measure and to solve the contradiction between density and mechanical performance and value of polystyrene concrete.2.Experiments on cube strengths bend strength thermal conductivity, coefficient of softening mechanical and physical performance index etc are carried out .The mix proportion of polystyrene concrete we find out can meet the needs of building system.3.In consideration of the experience in foreign countries, the appearance of heat preservation polystyrene-cement blocks is well designed. Thermal calculations in service construction period and verification on the scheme of construction have been done. What' s more, the price is generally competitive with those of other building materials.4.Respective elastic finite element analysis of Multi-hole shear wall under lateral loads or vertical loads is carried out by ANSYS program in order to understand the character of wall deformation .The results show that this specimen' s integrity is ok, and wall section direct stress distribution is linear approximately and displacement curve is bending and shear deformation. The method that the lateral stiffness of the Multi-hole shear wall can be calculated by an equivalent thickness solid shear wall is presented and proved to be reliable by finite element analysis. At last, comparison between the finite element method and the accurate method displays that the former is reasonable to some extent.