Construction process of rigid waterproof roofing

Abstract

The construction process of the present invention includes plastering the extension joint with cement mortar into arc and covering the arc with asphalt felt; plastering the flashing with cement mortar into tile shape and covering it with asphalt felt; spreading lime mortar base layer; depositing two C20 waterproof concrete layers on the base layer and leveling and press finishing; spraying water to cure; laying supporting bricks, installing heat insulating plate and plastering with cement mortar on the surface of heat insulating plate; and making lattice with flat bar. The present invention can result in high waterproof effect.

Description

technical field [0001] The invention relates to a building construction method, in particular to a construction method for a rigid waterproof roof. Background technique [0002] Rigid waterproof roofs were first used in the 1870s and 1980s. The construction method was to lay an isolation layer on the roof panel, pour a rigid layer, caulk, and install a heat insulation board in sequence. In this construction method, since the roof is directly exposed to the air, the caulking ointment and the flexible adhesive material for covering the seam will gradually age and become brittle and lose their adhesive force. The gap between the seam ointment and the flexible adhesive material of the cover seam will cause water leakage in the expansion joint; this construction method is to embed the roof rigid layer concrete into the parapet brick masonry, and this rigid connection is larger than the parapet due to the temperature deformation of the concrete rigid layer For brick masonry, the ...

AI Technical Summary

Problems solved by technology

In this construction method, since the roof is directly exposed to the air, the caulking ointment and the flexible adhesive material for covering the seam will gradually age and become brittle and lose their adhesive force. The gap between the seam ointment and the flexible adhesive material of the cover seam will cause water leakage in the expansion joint; this construction method is to embed the roof rigid layer concrete into the parapet brick masonry, and this rigid connection is larger than the parapet due to the temperature deformation of the concrete rigid layer For brick masonry, the temperature of the C20 concrete in the roof rigid layer is often higher than that of the parapet brick masonry under the sun exposure, and the temperature deformation of the roof rigid layer C20 concrete leads to cracks in the parapet brick masonry, and rainwater seeps into the room through the cracks. This is what is commonly referred to as parapet flooding and water leakage; and there are many microcracks on the surface of C20 concrete, which itself is a porous (micro) gap material. Although the rainwater on the roof has no pressure, it can still pass through in continuous rainy weather. The C20 concrete that enters the porous (micro) gap from the micro-cracks on the surface, and the thickness of the rigid waterproof layer of the roof is only about 40mm, so the rainwater will gradually penetrate into the rigid waterproof layer, causing the rigid waterproof layer to leak

It can be seen that due to its inherent defects, this kind of rigid waterproof roof will inevitably experience water leakage within one year after completion. Therefore, the waterproof effect of the current rigid waterproof roof cannot meet people's requirements, so that the current roof waterproof project It is rare to see a rigid waterproof roof alone as a waterproof layer

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