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Low-alkali-content and crack-resistant water repellent and preparation process therefor

An anti-cracking waterproofing agent and preparation technology, which is applied in the field of building materials, can solve problems such as the influence of surrounding residents and pollution of the atmospheric environment, and achieve the effects of small strength influence, low alkali content, and good expansion performance

Inactive Publication Date: 2016-09-21
沈阳市百德旺建筑材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is not properly treated, it will spontaneously ignite or burn, producing a large amount of harmful substances such as sulfur dioxide, nitrogen oxides, carbon oxides and smoke dust, which will pollute the air environment and affect the surrounding residents.

Method used

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  • Low-alkali-content and crack-resistant water repellent and preparation process therefor
  • Low-alkali-content and crack-resistant water repellent and preparation process therefor
  • Low-alkali-content and crack-resistant water repellent and preparation process therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The purpose of this embodiment is to provide a low-alkali anti-cracking waterproofing agent synthesized by using waste coal gangue and water glass slag liquid and its preparation process.

[0038] This embodiment specifically provides a low-alkali environment-friendly anti-cracking waterproofing agent, which is composed of the following mass ratios: calcined coal gangue: calcium oxide clinker: waste slag of water glass: polyvinyl alcohol: desulfurized gypsum: stearic acid 20-70: 5-55: 1-30: 0.5-7.0: 1-30: 0.1-5.0.

[0039] Concrete, the material composition of following mass ratio: calcined coal gangue: calcium oxide clinker: waste slag of water glass: polyvinyl alcohol: desulfurized gypsum: stearic acid is 30~60:15~45:5~20:1.0~ 6.0: 5-20: 0.2-2.5.

[0040] However, in order to obtain a high-quality low-alkali environment-friendly anti-crack waterproofing agent, the present embodiment is specifically composed of the following mass ratios: calcined coal gangue: calcium ...

Embodiment 2

[0069] In this embodiment, except that the ratio of raw materials is as follows, the rest of the production process and technical scheme are the same as in Embodiment 1.

[0070] The ratio of raw materials in this embodiment is: calcined coal gangue: calcium oxide clinker: waste slag of water glass: polyvinyl alcohol: desulfurized gypsum: stearic acid is 50:35:10:0.5:4:0.5.

Embodiment 3

[0072] In this embodiment, except that the ratio of raw materials is as follows, the rest of the production process and technical scheme are the same as in Embodiment 1.

[0073] The ratio of raw materials in this embodiment is: calcined coal gangue: calcium oxide clinker: waste slag of water glass: polyvinyl alcohol: desulfurized gypsum: stearic acid is 50:35:5:0.5:9:0.5.

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Abstract

The invention specifically provides a low-alkali-content, environment-friendly and crack-resistant water repellent. The water repellent is prepared from the substances in mass ratio: calcined coal gangue, calcium oxide clinker, water glass waste residue, polyvinyl alcohol, desulfurized gypsum and stearic acid which are in the mass ratio of (40 to 50): (25 to 35): (10 to 15): (1.5 to 4.5): (10 to 15): (0.5 to 1.0). A preparation process for the low-alkali-content and crack-resistant water repellent comprises the steps of carrying out baking, carrying out crushing, carrying out grinding, carrying out subpackaging, carrying out sealing, carrying out quality testing and carrying out warehousing. The low-alkali-content and crack-resistant water repellent is synthesized through proportioning the waste coal gangue, the water glass waste residue and calcareous mineral powder and carrying out grinding. According to the low-alkali-content and crack-resistant water repellent and the preparation process therefor, the coal gangue and the water glass waste residue, which are extremely high in harmfulness and are refractory, are comprehensively utilized, so that the waste is changed into the valuable; and the low-alkali-content and crack-resistant water repellent has a variety of characteristics such as environmental protection and mineral resource reutilization, and good economic and social benefits are achieved.

Description

technical field [0001] The invention relates to the field of building materials, and in particular provides a low-alkali anti-cracking waterproofing agent synthesized by utilizing waste coal gangue and water glass slag liquid and a preparation process thereof. Background technique [0002] The traditional calcium sulfoaluminate anti-cracking waterproofing agent has a series of defects such as high alkali content, large dosage, long expansion and stability period, poor impermeability, and large loss of concrete strength, and is no longer suitable for construction engineering. Durability requirements. In response to the above problems, although low-alkali and low-mixing concrete anti-cracking and waterproofing agents have appeared on the market, and some products have been put into engineering applications, the production costs are high and the use effects are not ideal, so they have not yet been recognized by the market. [0003] In addition, in the process of coal mining or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B103/65
CPCC04B40/0046C04B2103/65
Inventor 李延风王晓彬
Owner 沈阳市百德旺建筑材料科技有限公司
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