Study On Force And Thermal Performance Of Full-break Bridge Composite Thermal Insulation Decorative Integrated Block Masonry

The problem of energy shortage is becoming more and more prominent,and building energy consumption accounts for a high proportion of total energy consumption.In recent years,many regions in China,such as Beijing and Shanghai,have proposed to increase building energy efficiency to 75%,and the key to achieving this goal is to optimize the energy saving effect of building exterior walls.In addition,China's power industry is developing rapidly.The coal combustion of thermal power generation has caused a large accumulation of fly ash,which has brought tremendous pressure on China's ecological environment and economic construction.The comprehensive utilization research of fly ash in the field of building materials will bring good ecological and economic benefits.Under the background of energy saving and waste,this paper applies the full-bridging composite thermal insulation decorative integrated block to the masonry structure,the full-bridging composite thermal insulation decorative integrated block sandwich EPS insulation board in the middle,and the energy-saving effect is similar to that of the sandwich wall,but the construction process is more simplified.The block has many advantages such as energy saving,economy and convenient construction.In this paper,the basic mechanical performance and thermal performance of the full-bridging composite thermal insulation decorative integrated block masonry are tested experimentally,and the test results are analyzed and summarized to provide a basis for the promotion and application of the block.The main research contents include:(1)Experimental study on material properties of the full-bridging composite thermal insulation decorative integrated block and masonry mortar.The compressive test of the full-bridging composite thermal insulation decorative integrated block and six kinds of masonry mortar was carried out,and the failure mode of the block was studied.(2)Research on axial compression performance of the full-bridging composite thermal insulation decorative integrated block masonry.In this paper,the axial strength test of six groups of standard specimens was carried out,and mortar strength,gray seam thickness and mortar type were key research variables.The failure characteristics,cracking load,ultimate strength,elastic modulus and ?-? curve of the block masonry of this paper when it's is under axial pressure were analyzed.(3)Research on seam shear resistance of the full-bridging composite thermal insulation decorative integrated block masonry.In this paper,six groups of the standard specimens are subjected to shear tests,and mortar strength and mortar type were key research variables.The failure characteristics and ultimate strength of the block masonry of this paper when it's masonry joints are shear resistant were analyzed.(4)Research on design calculation method of the full-bridging composite thermal insulation decorative integrated block masonry.The factors affecting the strength of the masonry was analyzed in this paper.The applicability of the norm formula to the full-bridging composite thermal insulation decorative integrated block masonry was analyzed,and a formula for calculating the masonry strength design values was proposed.(5)Research on thermal performance of full-bridging composite thermal insulation decorative integrated block masonry.The heat transfer coefficient results of block masonry obtained by three methods: test detection,standard formula calculation and numerical simulation were compared and analyzed in this paper.The influence of the thickness of the gray joint,the thickness of the insulation layer and the tie parts on the energy-saving performance of the block masonry were analyzed.