As far as wall energy conservation is concerned, the traditional method of increasing the thickness of the wall with a heavy single material to achieve thermal insulation has been unable to meet the requirements of energy conservation and environmental protection, and the composite wall has increasingly become the mainstream of the wall. The composite wall generally uses bulk material or reinforced concrete as the load-bearing structure, and is composited with the thermal insulation material, or the thin-walled material is used for the thermal insulation and heat insulation material as the wall in the frame structure.
At present, the building insulation and heat insulation materials mainly include rock wool, slag wool, glass wool, polystyrene foam, expanded perlite, expanded vermiculite, aerated concrete and rubber powder polystyrene pellet foamed cement insulation board. The production and production of these materials require special processes and special equipment, rather than the traditional technology. It is worth mentioning that the rubber powder polystyrene granule slurry is obtained by mixing the rubber powder and the poly benzene granule light aggregate into water and smearing it on the outer surface of the wall to form a cavity-free insulation layer.
The polyphenylene granule aggregate is made by pulverizing the recycled waste polystyrene board, and the rubber powder is mixed with a large amount of fly ash, which is a waste utilization, energy saving and environmental protection material. The composite technology of the wall has three kinds of insulation layers, external insulation layer and sandwich insulation layer. China has adopted sandwich insulation methods. In Europe, most of them use foamed polystyrene board. In Germany, exterior insulation buildings account for 80% of the total construction, and 70% of them use foamed polystyrene board.
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