Research On Mechanical And Thermal Performance Of The Energy-Saving Sandwiched Self-Thermal Insulation Blocks

With the development of society, the government of China pays more attention to the energy issue than before. Also puts forward higher requirements to the energy consumption of building, which accounted for a higher proportion of the total energy consumption of building. In recent years the requirement of building energy efficiency has increase to65%. Losses for the construction of the wall energy consumption accounted for about70%to80%of the entire energy consumption of building. In order to meet the new energy requirements proposed by the state, the key lies in improving the insulation performance of the walls. Insulation wall blocks of exterior wall can overcome the current building complex structure of external wall, poor fire resistance, architectural structures of different life, and many other shortcomings. This kind of self-insulation block has been strongly promoted. And "The self-insulation concrete composite block "(JG/T407-2013) was enacted in February2013.The purpose of the paper is to develop a new energy-saving insulation sandwich blocks. Compared to traditional sandwich construction technology exterior wall, the masonry which is made of the composite small concrete block within polystyrene insulation board has many advantages. The construction technology is very simple. The block is friendly to soil, economic and convenient construction. In this paper, the basic mechanical experiment on block and masonry is carried out, and the test results are analyzed and summarized.This paper mainly studied as follows:(1) Designed and produced3groups of different concrete strength of the new energy-saving insulation sandwich block, dimensions of which is390mm x190mm x190mm. Through experimental study on blocks, identify the key factors affecting the strength of new type energy-saving block. Analysis and optimization of block designs, choose more reasonable—K2(190) from the five kinds of block.(2) Select the block of K2(190), do the further physics research on block promulgated under the national building code. Analysis the shear strength,dry bull density and softening coefficient of concrete block. The test results are compliance with the relevant provisions of the state.(3) Using ANSYS finite element software and gauge theory empirical formula to analyze the thermal performance of the new blocks. Comparison with the experimental results, indicate that the numerical analysis ANSYS software can accurately simulate the cloud of temperature field, temperature gradient and heat flow. The analysis of the thermal performance of the block can play a important part of the result.(4) Comparison of the energy-saving insulation block masonry walls and unreinforced masonry ultimate bearing capacity of reinforced masonry walls which is made of K2(190) sandwich block. Obverted the damage phenomenon and identify the trend of cracks.(5) Polystyrene insulation board placed in a mold, pouring concrete in the mold, and then form removal, block molding without post-processing, comes with decorative effect can be directly used in non-load-bearing walls. This kind of masonry is convenient in spot, and has good economy, easy to promote in the actual production.The purpose of this paper is to select the good integrity and compliance blocks, by improving the structure of block. And analysis of compression testing of masonry structure to developing an applicable in cold regions and energy efficiency, insulation and new energy-saving sandwiched self-thermal insulation block.