Experimental Study On Mechanical Behavior Of Material In Composite Board Of Foam Cement

Composite board of foam cement is a patent of new building boards developed by Beijing Taikong Panel Industry Corp. It uses light steel and steel truss as skeleton and foam cement as filler. It includes all the excellent properties like light weight, high strength, durability, high efficient of heat preserving, heat insulation, sound insulation, quake-proof and easy to waterproof. The foam cement has great influence on the mechanical properties of the composite board and studying the basic mechanical properties of foam cement has important significance. This paper made an experimental study of the mechanical properties of the core material of the Taikong wallboard-foam cement using the cubic and prism foam cement of three different density (density of360kg/m3,460kg/m3and560kg/m3),four different fiber content (fiber content were0‰,0.3‰,0.6‰,0.9‰, the fiber content is the ratio of adding fiber quality and the total quality of the test blocks.) provide by Beijing Taikong Panel Industry Corp. The completed work as follows:1. Experimental study of strength:By uniaxial compression test with cube and prism specimens of foam cement, obtained the cube compressive strength, the prism compressive strength and Young’s Modulus, also obtained the influence of different density and different fiber to the strength.2. Experimental study of constitutive relation:Study the scheme of uniaxial compressed stress-strain curve of foam cement, get the uniaxial compressed stress-strain curve and deduces the reasonable stress-strain curve equation and the constitutive relation model.3. The finite element analysis:With the deduced constitutive relation model of foam cement, use the finite element analysis software ABAQUS imitate uniaxial compression of prism test blocks and get its uniaxial compressed stress-strain curve, finding it fits well with the curve getting from experiment; Then imitate the mechanical performance of the wall frame consists of C type steel and rebar truss in the vertical load; At last add the foam cement to the wallboard and analyze the mechanical performance of space wallboard in the vertical load.