Research On The Mechanical Properties And Thermal Performance Of EPS Particles-EPS Board Composite Insulation Wallboard

With the concept of building energy saving has become a focus in the world, thedevelopment of new energy-saving insulation wall material has become themain direction of the development of the construction field. In foreign countries,research of new wall materials is more comprehensive, moremature theoretical level. China starts relatively late, whether it is fromthe experimental research or theoretical research is in the primary stage.This paper aims to develop a light energy-saving insulation wallboardcomposite by EPS particles and EPS board, Based on the selection of thematerial and structure optimization, determined the basic structure of wall panel.the wall surface density, moisture content, softening coefficient, water absorptionrate and other relevant physical parameters were determined through a series ofexperiments. Made a Systematic analysis and research on the mechanical propertiesand fracture morphology of the wall in different loads, through the axial compressiontest, bending test, impact test and anti-break test. Provided data support for theapplication of the wall in actual engineering. Analysised the impact of benzeneboard’s thickness, insulation mortar’s thickness, cement mortar’s thickness and ribwidth of thermal insulation morta to thermal performance parameters of wallboard.Determined the influence factors of the thermal performance of the wall panel andgave the thermal performance value under different influence factors. Providetheoretical support for the selection of the type of wall in practical engineering.The wallboard is mainly used in steel frame structure, the filling of the wallboardmay make a certain influnce to the lateral stiffness of steel frame structure. This paperused the finite element analysis software ABAQUS, for the further study of thisinteraction. Made the study on the bearing capacity stress and stiffness of thewallboard-steel frame system under the control of displacement loading.As thefilling of the wallboard greatly improved the lateral stiffness of the whole frameworksystem that the wall can be used as a kind of lateral resistant component. Thewallboard played an important role in the process of loading, however, thiseffect was often overlooked in practical engineering design. Focusing on the lateralresistant ability of the wallboard, proposed an assumption which simplified the wallboard as the equivalent diagonal strut, through theoretical formula derivationand numerical simulation modification, got the final equivalent diagonal strut radiuscalculation formula. In the actual engineering design, designers can calculatethe radius of cross section of the equivalent diagonal strut according to theformula, which can reduce the using of steel, reach the goal of economic rationality.