A construction process for asphalt waterproofing membrane

By forming a crosslinking network between self-adhesive rubber asphalt waterproof roll and cement mortar, the problem of easy deformation of the bonding interface during asphalt waterproof roll construction is solved, high-strength bonding and self-repairing performance is achieved, and the waterproof and anti-seepage effect of the waterproof roll is improved.

CN120100095BActive Publication Date: 2025-08-22ANHUI HOUFU CONSTRUCTION ENGINEERING CO LTD
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Patent Information

Application Number
CN202510130497.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-02-05
Publication Date
2025-08-22
Estimated Expiration
2045-02-05

AI Technical Summary

Technical Problem

In the construction of existing asphalt waterproof rolls, the hot melting method is greatly affected by temperature and humidity and is prone to deformation, and the wet laying method is poor in flexibility, resulting in the waterproof layer being prone to failure; in the prior art, the bonding interface between the asphalt waterproof rolls and cement mortar is prone to deform, affecting the waterproof effect.

Method used

Self-adhesive rubber asphalt waterproof coils are used, and SBS, sticky resin, calcium silicate whiskers, modifiers and reinforced fillers are added. The construction is carried out through wet laying method, and a cross-linking network is formed with cement mortar to improve bonding strength and flexibility and increase self-healing performance.

Benefits of technology

It realizes high-strength bonding between asphalt waterproof coil and cement mortar, reduces leakage, and has high bonding strength between coils, has self-repairing performance, improves waterproof and anti-seepage effect, and reduces deformation and cracks.

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Abstract

The present invention discloses a construction process for asphalt waterproofing membrane, comprising the following steps: (1) applying cement mortar with a thickness of 2-4 mm on a base surface; (2) removing the isolation film on the lower surface of the asphalt waterproofing membrane, laying the asphalt waterproofing membrane flat on the cement mortar, rolling and exhausting the air, overlapping the asphalt waterproofing membranes, with the overlap width of the long side being 70-80 mm and the overlap width of the short side being 90-100 mm, and the short side joints of two adjacent rows of membranes being staggered by more than 1 / 3 of the width. After the membranes are laid, the ends of the membranes are sealed with a sealing paste; (3) after 24-48 hours, applying a concrete waterproofing protective layer and curing. The waterproofing membrane used in this construction process has good adhesion to the cement mortar, good flexibility, and certain self-repairing properties, and has excellent waterproofing and anti-seepage effects after construction.
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