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A method for repairing moisture-proof layer of building wall with high relative humidity

A technology for building walls and repair methods, applied in building maintenance, construction, building components, etc., can solve the problem of lack of high relative humidity building wall moisture-proof layer repair methods, structural safety, hidden dangers of external wall waterproofing, changes in building structures, etc. problems, to achieve the effect of improving experience, simple operation and equipment requirements, and low construction cost

Active Publication Date: 2021-06-29
广州市城市规划设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is likely to cause cracks in the surrounding walls during and after the chiseling process, which poses hidden dangers to structural safety and waterproofing of the external wall, and damages the original wall to a certain extent, and changes the original building structure.
[0004] The chemical method is to force-inject the hydrophobic material into the wall, and inject the paste-like hydrophobic agent with siloxane as the main component, but it is only suitable for Beijing, Tianjin and other dry areas in the north.
However, for the southern region with sufficient rainwater, the effect is very poor in areas with high relative humidity of building walls. In the prior art, there is no effective repair method for the moisture-proof layer of building walls with high relative humidity.

Method used

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  • A method for repairing moisture-proof layer of building wall with high relative humidity
  • A method for repairing moisture-proof layer of building wall with high relative humidity
  • A method for repairing moisture-proof layer of building wall with high relative humidity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] A key cultural relic protection building was built in 1933

[0071] 1. Drill double rows of cross holes along the joints of the brick masonry. The inclination of the drilling holes is 30°, and the diameter of the drilling holes is preferably 15mm; the height of the drilling holes is 350mm from the ground, and the height of the last row of holes should be higher Ground at least 150mm. The hole spacing of the same row of double row cross punching is 200mm. The distance between the drilling holes is preferably 100mm.

[0072] 2. Use a vacuum cleaner to clean the dust in the hole.

[0073] 3. Inject the waterproofing agent diluted with ethanol into the hole to make it full.

[0074] 4. After 24 hours, the drilling should be sealed with hydraulic lime slurry or low-alkali cement slurry with good fluidity and no shrinkage.

[0075] By comparison, before restoration: the wall humidity range is 15-25%, and the average humidity is 21.2%; after treatment: the wall average hum...

Embodiment 2

[0077] A temple water stop and tide avoidance project

[0078] 1. Drill double rows of cross holes along the joints of the brick masonry. The inclination of the drilling holes is 30°, and the diameter of the drilling holes is preferably 15mm. Ground at least 150mm. The hole spacing of the same row of double row cross punching is 240mm. The distance between drilling holes is preferably 300mm.

[0079] 2. Use a vacuum cleaner to clean the dust in the hole;

[0080] 3. Inject water-repellent diluted with ethanol into the hole to make it full;

[0081] 4. After 24 hours, the drilling should be sealed with hydraulic lime slurry or low-alkali cement slurry with good fluidity and no shrinkage.

[0082] After treatment: the phenomenon of dampness on the wall is obviously weakened.

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Abstract

The invention discloses a method for repairing the moisture-proof layer of a building wall with high relative humidity. The method includes drilling double or multiple rows of holes along the brickwork joints of the building wall and drilling downwards incline towards the building wall, and each row The drill holes in the drill holes are located between the drill holes in the adjacent rows to be arranged in a staggered manner, and the mortar powder and dust in the drill holes are cleaned; the potassium methyl silicate with absolute ethanol as the carrier is injected into the drill holes to agent; after the water-repellent agent is diffused and solidified, the drill hole is sealed with clear slurry.

Description

technical field [0001] The invention relates to the construction field, in particular to a method for repairing the moisture-proof layer of a high relative humidity building wall. Background technique [0002] For existing buildings or historical buildings that have not installed a moisture-proof layer or the moisture-proof layer has been damaged, due to the existence of rainwater and capillary water rising from the building, it is easy to have internal wall resurgence, mildew, wall shedding, bacterial growth, and easy breeding of insects. In severe cases, it can threaten the health of residents. The moisture-proof layer can prevent capillary water from rising, and plays an important role in ensuring the comfort and safety of the indoor environment of the building. Therefore, it is very necessary to repair the moisture-proof layer, enhance the waterproof ability of masonry, and restrain the rise of capillary water. [0003] At present, the common methods of repairing the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/64E04G23/02
CPCE04B1/648E04G23/02
Inventor 汪进石穗宁王霖余倩雯古美莹易智康莫文彬余璇
Owner 广州市城市规划设计有限公司
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