The waste polystyrene plastic (abbreviated as EPS) is processed and crushed into particles of 0.5 to 4 mm, and the thermal insulation mortar is prepared as a light aggregate. The technology includes an insulation layer, a crack resistant protective layer and a barrier protective surface layer (or a surface layer anti-seepage and anti-cracking two-in-one mortar layer). Among them, ZL rubber powder polystyrene granule insulation materials and technology were listed as national-level construction methods by the Ministry of Construction in 1998. This method is currently widely recognized as an exterior wall insulation technology.
The construction technology is simple, can reduce labor intensity and improve work efficiency; it is not affected by structural quality differences, and the wall surface does not need to be repaired and leveled when the defective wall is constructed, and the thermal insulation slurry can be directly used to supplement, avoiding other Insulation construction technology is due to the phenomenon that the leveling plaster is too thick and falls off. At the same time, the technology solves the problem that the interface layer is easy to debond and empty, and the surface layer is easy to crack due to the poor use conditions in the external wall insulation project, thereby realizing an important breakthrough in the external wall insulation technology.
Compared with other external insulation, the cost is lower when the same insulation effect is achieved, which can reduce the construction cost of the house. For example, compared with polystyrene board external insulation, it can be reduced by about 25 yuan per square meter. This technology is used in the high-rise exterior wall insulation project of Tianjin Yunxiao New Residence. In addition, in the energy-saving insulation wall technology, the wall is made into a sandwich layer, and perlite, wood chips, mineral wool, glass wool, polystyrene foam, polyurethane foam (also can be foamed in the field) are filled into the interlayer. Forming an insulating layer.
At present, a variety of insulation surface veneer bricks have been formed on the market. Among them, the rubber powder polystyrene particle exterior wall thermal insulation paste brick technology construction department once organized an expert council, and in 2004 the industry standard issued by the Ministry of Construction The powder polystyrene granule external thermal insulation system "JG158-2004" made a clear provision: the basic structure of the rubber powder polystyrene granule external wall insulation paste brick technology, that is, the rubber powder poly benzene granule insulation slurry as the insulation layer, Anti-cracking mortar composite hot-dip galvanized steel wire mesh plastic anchor bolting is anti-cracking protective layer, special bonding mortar bonding brick for facing brick, special jointing rubber powder for facing brick is the finishing layer.
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