Repairing method for damp-proof course of historical building

Abstract

The invention discloses a repairing method for a damp-proof course of a historical building. The repairing method for the damp-proof course of the historical building comprises the following steps that (1) wall plaster and loose mortar in mortar joints are removed, and cement mortar is embedded in the hollow mortar joints and brick defect positions of a wall; (2) a sealing protective waterproof layer is smeared on the wall with a waterproof agent and mortar paint as raw materials; (3) grouting holes are drilled between brick joints on the wall coated with the sealing protective waterproof layer at the inclination angle of 20-50 degrees, and waterproof grout is injected into the grouting holes; (4) 2-4 days later, holes are drilled in the positions of the original grouting holes again, and a proper amount of waterproof grout is injected into the grouting holes; and (5) one day later, the grouting holes are blocked with clean hole sealing grout. According to the repairing method, operation and equipment requirements are simple, the construction cost is low, the construction period is short, and the efficiency is high; and it is detected that the amount of capillary water rising into the repaired wall is greatly reduced, and a remarkable damp-proof effect is achieved.

Description

technical field [0001] The invention relates to the technical field of building restoration, in particular to a method for repairing the moisture-proof layer of historical buildings. Background technique [0002] Most of the existing buildings, buildings with historical features, or buildings without damp-proof layers installed before the 1950s, or buildings with damaged damp-proof layers installed at that time, repairing or resetting the damp-proof layers is the way to protect and comprehensively utilize these It is one of the technical means of existing buildings and historical buildings. [0003] At present, there are basically two types of technical methods for repairing the moisture-proof layer: mechanical physical methods and chemical injection methods. The chemical method is a technical means to inject hydrophobic materials into the wall through pressure or natural gravity, capillary action, etc. (no pressure), and form a continuous moisture-proof layer in the wall. ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the technical solution disclosed in the patent CN102022009A has a good repair effect on the non-destructive damp-proof layer, but the moisture-proof effect on buildings with serious damage to the damp-proof layer is poor, and the surrounding walls are likely to crack during the construction process, resulting in two secondary damage; patent CN104790682A introduces uronic acid into the polyurethane prepolymer system to react, and modifies the p

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