Cement based penetrative crystallized waterproof material and its preparation

A technology of waterproof material and osmotic crystallization, applied in cement coatings, antifouling/underwater coatings, paints containing biocides, etc. The method is simple, the construction work is simple, and the adaptability is good.

Inactive Publication Date: 2004-02-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the cement-based waterproof materials commonly used at present are surface-sealed waterproofing agents. The waterproof effect only acts on the surface, and cannot automatically and deeply penetrate into the interior of the structure; the wat

Method used

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Example Embodiment

[0037] High-performance permeable crystalline waterproof material, composed of siloxane, sodium methyl naphthalene sulfonate condensate, potassium aluminum sulfate dodecahydrate, sodium sulfate, Portland cement, calcium hydroxide, magnesium hydroxide, bentonite, and quartz sand . In the specific implementation process, the weight percentage of each component is:

[0038] According to the aforementioned ratio and the aforementioned preparation method, high-performance cement-based permeable crystalline waterproof materials with slightly different performance requirements and suitable for different occasions can be prepared.

[0039] High-performance cement-based permeable crystalline waterproof material, mixed with water at the ratio of gray to water ratio of 1:0.3-.35 to form a fluid slurry with a certain thixotropy. It is painted on the wet concrete base layer, and the active ingredients penetrate into it. Inside the concrete, it reacts to form insoluble crystals such as ettring...

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Abstract

A penetration-crystallization type cement-base water-proof material for building is prepared from silicate cement, sodium methyl naphthalenesulfonate condensate, water silane emulsion, dodecahydrated aluminium potassium sulfate, magnesium hydroxide, calcium hydroxide, sodium silicate, bentone and quartz sand through proportional mixing. Its advantages are high penetrability and crystallinity, permanent water-proof effect, and self-repairing of fine cracking.

Description

technical field [0001] The invention relates to a cement-based waterproof coating material for construction, in particular to a high-performance cement-based waterproof and anti-leakage coating material for cement, mortar, and concrete in water conservancy, hydraulic engineering, hydropower, bridges, tunnels, underground, and construction projects. Penetrates crystalline waterproof coating material. Background technique [0002] Due to its high brittleness, concrete structures often crack inevitably in engineering applications. This kind of cracking leads to the decrease of water tightness and leakage of the concrete structure, which affects the service life of the project, and even cannot be used normally. This is a common problem in the construction industry. There are two main reasons for cracks in concrete structures, one is caused by deformation, including shrinkage, expansion, and uneven subsidence caused by changes in temperature and humidity; the other is caused by...

Claims

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Application Information

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IPC IPC(8): C09D1/06C09D5/16
Inventor 蒋正武孙振平
Owner TONGJI UNIV
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