Several kinds of economic practical research and analysis of external thermal insulation material
< P> a, expanded polystyrene board thin plastering exterior insulation system < / P> < P> expansion of polystyrene board thin plastering exterior insulation system, take the lead in popularization and application in Beijing and rapidly extended to tianjin, hebei, northeast three provinces, and even some southern provinces such as Shanghai, jiangsu and hunan, is still a large number of applied to the external wall thermal insulation engineering, especially in the northern cold region, is one of insulation energy-saving projects to promote faster production system in our country, it USES the thermal insulation material mainly for polystyrene foam board, auxiliary materials and materials has dedicated expansion bolts of mushrooms, alkali resistant glass fiber grid cloth, polymer adhesive mortar and plaster mortar, wall paint or decorative brick, etc. , the construction method is to choose polymer bonding mortar paste polystyrene foam board on the wall, with dedicated expansion mushroom rivet the anchor fixation, alkali resistant glass fiber grid cloth with impervious anti-crack mortar on the polystyrene foam board, then wipe anti-seepage 3 ㎜ anti-crack mortar, the exterior wall paint brush or do tile decoration.
< / P> < P> it has advantages of good heat preservation and energy saving efficiency and the construction is more specification;
Defect is: very poor fireproof performance, process complex, highly to the flatness requirement of the wall at the grass-roots level, engineering cost is high,
Cost of 70 ~ 90 yuan per square meter)
, degree of thermal insulation layer is firm and use life is poorer, on engineering application in bonding is not strong, plaster anti-seepage anti-crack mortar is often a massive crack, empty drum, fall off wait for a phenomenon, especially when adornment layer for brick is particularly serious, brick and thermal insulation layer falls off phenomenon of large area very much.
< / P> < P> from the technical analysis, expansion of polystyrene board thin plastering exterior insulation system, with cement polymers in binding mortar bonded to the plastic plate, the material selection and process itself has mistakes, from application architecture and building materials in our country history, decades of experience have proved that cement materials and wood, plastic material for cold glue is impossible to have a good bonding effect, even the cold plastic and plastic stick also won't have good and long summary effect.
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