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A construction method for renovation of old hard waterproof roof

A construction method and hard technology, applied in the direction of roof covering, building roof, building structure, etc., to achieve good waterproof effect

Active Publication Date: 2015-09-09
CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, it has not been used in the renovation of old hard waterproof roofs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Below, the present invention will be further described in detail by taking the refurbishment of the waterproof roof of Wanggang No. 5 Building of Shanghai General Motors Pan-Asia Technology Center as an example, but the present invention is not limited to this embodiment.

[0035] Shanghai General Motors Pan-Asia Technology Center Wanggang 5# Building has a hard concrete and extruded board roof structure, with many roof cracks, and severe cracks in the waterproof layer on the separation joints, which has lost its proper waterproof function, and the roof exhaust pipe layout Less, because of various factors such as the settlement of the building, the waterproof material cracks seriously, and the original waterproof effect has been lost, so the waterproof maintenance of the entire roof is required. Under the roof are the research and development center, experiment center, and office factory area, with a total area of ​​6,500 square meters. According to field inspection, th...

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PUM

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Abstract

The invention relates to a construction method for applying one-component polyurethane to renovation and reconstruction of an old hard waterproof roof. The construction method comprises the following steps: (1) processing a substrate layer; (2) repairing details; (3) performing on-site maintenance; (4) spraying primer: taking a crylic acid mortar material as the primer and directly spraying on the substrate layer, or adding 1-2 times of solvent oil into the primer, uniformly stirring and then spraying; (5) coating a one-component polyurethane waterproof coating on the surface of the primer, so as to form a polyurethane waterproof layer; (6) coating a finishing coat so as to form a decorative protecting layer: taking an aliphatic polyurethane material as the finishing coat. The one-component high-solid-content polyurethane waterproof paint adopted in the construction method provided by the invention is firstly applied to the renovation and reconstruction of the old hard waterproof roof. The roof after being renovated and reconstructed according to the construction method provided by the invention has a good waterproof effect and is beautiful.

Description

technical field [0001] The invention relates to a construction method for applying single-component polyurethane to the renovation of old hard waterproof roofs. Background technique [0002] One-component polyurethane is a white viscous liquid without harmful substances such as TDI. It is made of isocyanate MDI and polyether polyol as the main raw materials, together with various additives and fillers through addition polymerization. It is used When coated on the waterproof base layer, through the chemical reaction between the -NCO end group in the polyurethane prepolymer and the moisture in the air, after the reaction is cured, it can form a tough, soft and seamless surface on the surface of the base layer, with excellent waterproof Performance milky white rubber waterproof coating. Specifically, one-component polyurethane has the following characteristics: [0003] (1) Single-component system, good storage stability, no precipitation, ready-to-use on site, convenient con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/03E04D11/02
Inventor 宁尚勇羡永彪杨胜徐晖朱震
Owner CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP SUZHOU