Process for constructing insulating wall by adhering polyphenyl plates, filling polyurethane and spreading plaster in a combing way

Abstract

The invention discloses a process for constructing an insulating wall by adhering polyphenyl plates, filling polyurethane and spreading plaster in a combing way, comprising the following steps: (1) adhering polyphenyl plates to a base wall by leaving a gap of 10-100 mm between adjacent polyphenyl plates; (2) after the bonding strength of the polyphenyl plates and the base wall being more than 60 percent of the designed bonding strength of the polyphenyl plates and the base wall, filling rigid polyurethane foams in gaps left among the polyphenyl plates with polyurethane filling or spraying equipment and forming composite polyphenyl plate and polyurethane insulating layers on the base wall; and (3) spreading plaster coating on the insulating layers. The process for constructing the insulating wall by adhering polyphenyl plates, filling polyurethane and spreading plaster in a combing way is easy, has low cost, effectively prevents the plastering coating layers from cracking, seeping, freezing, thawing and stripping in the gaps among the polyphenyl plates and can greatly prolong the service life of the insulating layer of the wall and improve the insulating effect of the wall.

Description

technical field [0001] The invention belongs to the technical field of building walls, and in particular relates to a construction process for thermal insulation walls in which polystyrene boards and plastering layers are compositely perfused with polyurethane. Background technique [0002] At present, in building energy-saving projects, polystyrene board thin plastering method is widely used for wall insulation. On the wall, apply a 5mm thick plaster layer on the surface of the polystyrene board, and then embed alkali-resistant mesh or steel wire mesh. This construction method has the following defects: the thin plaster layer has quality and safety hazards such as cracking, water seepage, freezing and thawing, and falling off at the joints between the polystyrene boards, which greatly shortens the service life of the wall insulation layer. The main reason for the above defects is that there is a gap left at the joint when the polystyrene board is pasted, and the thin plast...

AI Technical Summary

Problems solved by technology

This construction method has the following defects: the thin plaster layer has quality and safety hazards such as cracking, water seepage, freezing and thawing, and falling off at the joints between the polystyrene boards, which greatly shortens the service life of the wall insulation layer