Abstract
With urban high buildings increasing in China, the demand for efficiency of wall insulation is getting more and more serious, especially in northeast and northwest China. However, thermal insulation wall in domestic is quite easy to produce cracks under external conditions, which greatly reduces life time. In this paper, we expand the discarded glass and mix aggregate and polypropylene fiber to improve the compressive strength of concrete to achieve green multifunctional concrete.Through the performance test of the expansive glass, we conclude that performances of expansive glass become best at the sinter point of 660°;Moreover, TiO2 added to the exterior wall coating can catalyze the degradation of nitrogen oxides and formaldehyde to purify the air. Non-toxic and harmless, the wall, with strong thermal insulation efficiency, is expected to replace the current building materials in order to produce and utilize massively.
Highlights
Due to the cold winter in northeastern and northwestern China, residential houses mostly achieve the better thermal insulation efficiency through increasing the thickness of wall
The glass is expanded by a set of processes, and the expansive waste glass is replaced with the aggregate stone in the concrete
The expansive discarded glass as light aggregate is recycled and added to the concrete in order to produce extremely light fiber reinforced concrete with high strength, low density and low thermal conductivity, which turns into insulated wall concrete molding material; At the same time, this paper will have the catalytic performance of titanium dioxide powder into the external wall emulsion paint to make the emulsion painting with catalytic performance to paint the surface of wall material
Summary
Due to the cold winter in northeastern and northwestern China, residential houses mostly achieve the better thermal insulation efficiency through increasing the thickness of wall. [2] used the building energy simulation software to compare the insulation structure of the internal and external walls and concluded that the inner wall insulation was more environmental protection and energy saving.;Wang, etc. [3] simulated the heat transfer of self-insulating foam concrete in the study on heat transfer performance of foam concrete self-insulation wall and concluded that the insulation of external thermal insulation is greater than that of internal insulation because foam concrete has the best indoor thermal environment..Huang Pei[4] analyzed the advantages of precast concrete sandwich insulation wall. The material has good heat preservation efficiency, increases the energy utilization ratio effectively and reduces the environmental pollution caused by wasted glass, which is expected to replace the current building materials in order to produce and utilize massively
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