Low-cost gypsum-based self-leveling material

A gypsum-based, self-leveling technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of low flexural strength and compressive strength of self-leveling materials, environmental pollution, and unfavorable environmental protection. Achieve the effect of alleviating the pressure on environmental resources, reducing carbon emissions and low cost

Pending Publication Date: 2021-11-05
湖南愿景住宅工业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-leveling material α-type high-strength gypsum powder is the cementitious material, but it uses fine river sand as the aggregate and supplemented with cement. The cost is high and it is not conducive to environmental protection. In addition, fine river sand or quartz sand also faces high costs , environmental pollution, mining difficulties, and the self-leveling material has low flexural strength and compressive strength

Method used

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  • Low-cost gypsum-based self-leveling material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The low-cost gypsum-based self-leveling material in this example is prepared by mixing the following raw materials in parts by weight: 500 parts of desulfurized gypsum α gypsum powder, 500 parts of fly ash, 5 parts of ordinary Portland cement, and 1 part of polycarboxylate superplasticizer 0.3 part of silane defoamer, 0.4 part of sodium bentonite, 0.4 part of 400 hydroxypropyl methylcellulose, 2 parts of vinyl acetate and ethylene copolymer latex powder, 0.2 part of organosilane water-repellent agent, protein 0.3 parts of retarder.

[0035] The preparation method of desulfurized gypsum α gypsum powder in this embodiment comprises the following steps:

[0036](1) Mix the desulfurized gypsum raw material with the composite admixture evenly. The composite admixture is composed of calcium phosphate, aluminum sulfate and sodium citrate in a weight ratio of 15:45:2. The amount of the composite admixture is the weight of the desulfurized gypsum raw material 1.5% of the mixed ...

Embodiment 2

[0043] The low-cost gypsum-based self-leveling material in this example is prepared by mixing the following raw materials in parts by weight: 600 parts of desulfurized gypsum α gypsum powder, 400 parts of fly ash, 10 parts of ordinary portland cement, and 1 part of polycarboxylate superplasticizer 0.3 part of silane defoamer, 0.4 part of sodium bentonite, 0.4 part of 400 hydroxypropyl methylcellulose, 4 parts of vinyl acetate and ethylene copolymer latex powder, 0.2 part of organosilane water-repellent agent, protein 0.3 parts of retarder.

[0044] The water consumption of the low-cost gypsum-based self-leveling material in this embodiment is 0.35% of the total weight. After being stirred into a slurry, it is used for ground self-leveling construction.

Embodiment 3

[0046] The low-cost gypsum-based self-leveling material in this example is prepared by mixing the following raw materials in parts by weight: 700 parts of desulfurized gypsum α gypsum powder, 300 parts of fly ash, 10 parts of ordinary portland cement, and 1.5 parts of polycarboxylate superplasticizer 0.3 part of silane defoamer, 0.4 part of sodium bentonite, 0.4 part of 400 hydroxypropyl methylcellulose, 4 parts of vinyl acetate and ethylene copolymer latex powder, 0.2 part of organosilane water-repellent agent, protein 0.3 parts of retarder.

[0047] The low-cost gypsum-based self-leveling material in this embodiment uses 0.3% of the total weight of water when used, and after being stirred into a slurry, it is used for ground self-leveling construction.

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Abstract

The invention discloses a low-cost gypsum-based self-leveling material . The low-cost gypsum-based self-leveling material is prepared by mixing the following raw materials: desulfurized gypsum alpha gypsum powder, fly ash, an exciting agent, a water reducing agent, a defoaming agent, a suspension stabilizer, a water-retaining agent, rubber powder, a water repellent and a retarder. According to the present invention, the power plant desulfurization by-product desulfurization gypsum and the solid waste fly ash are adopted as the main raw materials, such that the resource utilization of the solid waste is achieved, the machine-made sand or the river sand is not required, the quartz sand ore or the natural river sand is not required, the energy is saved, the carbon emission is reduced, and the environmental resource pressure is relieved; and the obtained low-cost gypsum-based self-leveling material product is low in cost, good in fluidity and high in flexural and compressive strength, and all indexes are higher than the requirements specified by the existing industrial standard JC / T1023-2021 Gypsum-based self-leveling Mortar.

Description

technical field [0001] The invention relates to a gypsum-based self-leveling material, in particular to a low-cost gypsum-based self-leveling material. Background technique [0002] Ground leveling is an important part of construction in the construction industry. At present, the main method of ground leveling is to use ground self-leveling materials for leveling. Ground self-leveling materials are mainly inorganic self-leveling materials, which are further divided into cement-based self-leveling materials and gypsum-based self-leveling materials. Among them, gypsum-based self-leveling materials have the incomparable advantages of traditional cement-based self-leveling materials, such as high leveling accuracy, no cracking and no hollowing, controllable thickness, mechanized construction, high efficiency, short construction period, energy saving, and good thermal insulation performance. [0003] However, since most of the gypsum-based self-leveling materials currently on t...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B11/26C04B14/06C04B18/08C04B111/27
CPCC04B28/146C04B11/264C04B18/08C04B14/06C04B2201/50C04B2111/27C04B2103/302C04B2103/50C04B2103/465C04B2103/65C04B2103/22C04B22/062C04B22/08C04B24/26Y02W30/91
Inventor 黄兴张小勇谢志鹏
Owner 湖南愿景住宅工业科技有限公司
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