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A cement-based waterproof coating

A waterproof coating and cement-based technology, which is applied in the field of building materials, can solve the problems of low cost, poor treatment effect, and limited application range, etc., and achieve good base-level adaptability, good outdoor durability, and improved tensile strength.

Inactive Publication Date: 2016-01-06
长沙市神宇建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Waterproof coatings are widely used in the field of construction. At present, more cement-based permeable crystalline waterproof coatings are used, which mainly use the chemical and enzymatic actions between silicate ions, calcium ions, and hydroxide ions in concrete. , the principle of forming calcium silicate crystals, because this kind of waterproof coating can only repair small cracks, so the treatment effect is not good for larger cracks, and other waterproof coatings are needed, so its application range is limited
In addition, there is also a cement-based rigid waterproof material, which is mainly based on cement, and then mixed with water-repellent and gel materials to form a waterproof coating. Its cost is low, but it is mainly used for low-level waterproofing. It cannot be used alone as a waterproof layer

Method used

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  • A cement-based waterproof coating

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Effect test

Embodiment 1

[0026] The cement-based waterproof coating includes the following components and the ratio of parts by weight of each component is: Portland cement: 80 parts; polyacrylate emulsion: 40 parts; quartz sand: 25 parts; quartz powder: 25 parts; Material: 5 parts; Sodium silicate: 4 parts; Silicone: 0.5 parts; Triethanolamine: 0.6 parts; Polyacrylate: 0.2 parts.

Embodiment 2

[0028] The cement-based waterproof coating includes the following components and the ratio of parts by weight of each component is: Portland cement: 50 parts; ethylene-vinyl acetate copolymer emulsion: 60 parts; quartz sand: 30 parts; quartz powder: 20 parts; Mineral admixture: 10 parts; Sodium silicate: 6 parts; Silicone: 0.1 part; NNO: 0.3 part; Melamine polyester: 0.5 part.

Embodiment 3

[0030] The cement-based waterproof coating includes the following components and the ratio of parts by weight of each component is: Portland cement: 60 parts; ethylene-vinyl acetate copolymer emulsion: 50 parts; quartz sand: 27 parts; quartz powder: 23 parts; Mineral admixture: 8 parts; Sodium silicate: 5 parts; Silicone: 0.3 parts; MF: 0.5 parts; Melamine polyester: 0.5 parts.

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Abstract

The invention discloses a cement-based waterproof coating which comprises, by weight, 50-80 parts of portland cement, 40-60 parts of polymer emulsion, 25-30 parts of quartz sand, 20-25 parts of quartz powder, 5-10 parts of mineral admixtures, 4-6 parts of active material, 0.1-0.5 part of antifoaming agent, 0.3-0.6 part of dispersing agent and 0.2-0.5 part of water reducing agent. The composite type cement-based waterproof coating has better outdoor durability and better basement layer adaptability, and the defects that a cement-based capillary crystalline type waterproof coating can not fill large gaps, a cement rigid waterproof coating is not sufficient in flexibility, and a polymer emulsion coating swells again and is poor in waterproofness can be overcome. The tensile strength of the polymer emulsion coating is greatly improved.

Description

technical field [0001] The invention relates to a cement and a preparation method thereof, in particular to a polymer cement mortar and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Waterproof coatings are widely used in the field of construction. At present, more cement-based permeable crystalline waterproof coatings are used, which mainly use the chemical and enzymatic actions between silicate ions, calcium ions, and hydroxide ions in concrete. , the principle of forming calcium silicate crystals, because this kind of waterproof coating can only repair tiny cracks, so the treatment effect is not good for larger cracks, and other waterproof coatings are needed, thus limiting the scope of its application. In addition, there is also a cement-based rigid waterproof material, which is mainly based on cement, and then mixed with water-repellent and gel materials to form a waterproof coating. Its cost is low, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
Inventor 周建平赵西建
Owner 长沙市神宇建材有限公司
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