Research And Engineering Application On The New Composite Energy-saving Building Blocks Wall

In the great environment of economizing on energy in the building material, the new composite energy-saving building blocks as a kind of new self-preservation wall material hot spring, can be widely used in hot summer and cold winter zone, demanding walling reform, and have the vast market and application fore ground..A series of researchof this paper provide the related theory in the actual engineering of extensive application,meanwhile provide the reasonable technical suggestion in under construction.Therefore, the research of new composite energy-saving building blocks have academic value, engineering meaning and economic efficiency.The new composite energy-saving building blocks of this paper research construct quickly, save masonry mortar and lower the labourer’s labor strength.Making use of new composite energy-saving building blocks to be external wall material, can increase usable area under the sistuation that keep building area constant.By means of designing the blocks’groove, the main purpose is extension to spread path line and overcome hot bridge influence.Add the heat preservation ceramsite in the concrete, the flyash replaces cement,to make it have better thermal insulation, satisfy building energy efficiency requirement of our country and also economize raw material.lower cost in the meantime, protect the environment. Confirm the best activator of material based on the compressive strength test. Mixing design is from the mechanics physical contrast test, finally get the superior proportioning. The theoretical calculation of the new composite energy-saving building block’s the heat transmission coefficient and index of thermal intertia compared with the ordinary concrete blocks, the thermal resistance raises30%, index of thermal intertia raises12%, which is far above national economy energy standard and attain the thermal requirements of hot summer and cold winter zone. The result of setting out the heat transmission coefficient of masonry wall by imitating a natural environment in the laboratory is unanimously basic towards theoretical calculation result.It can be discovered in the engineering that the new composite energy-saving building block wall appears crack, main of them are deformation cracks.Temeprature, dry shrinkage and foundation’s sinking to decline difference is the three greatest causes.Then from the mechanics mechanism, regarding the wall as "integral wall", elaborate the main cause is that exist temperature stress and at the same time introduce its approximate calculation method; From the aspects of the design,construct,and " defend, set free, resist" puts forward the crack control measures;Finally put forward how to identify and therapy the crack, and lay the foundation for the new composite energy-saving building blocks extensively applying in the engineering. Blocks economize energy in all process from manufacture to usage. In the same hot environment,it can lower energy use significantly. It is not the more the thickness the more good, so it exists an economical thermal resistance.The only consideration winter heat preservation while computing, suppose the block as single material, simplify some factors appropriately, build up the wall economical thermal resistance expression type and solve, get the economical thermal resistance of Huainan,which is slightly larger than the block’s and satisfy economic demand.Figure [21] table [18] reference [84]...