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Desulfurized gypsum and fly ash cementing material formula

A technology for desulfurized gypsum and fly ash, which is applied to the formulation of desulfurized gypsum and fly ash cementing material, the formulation of desulfurized gypsum for making cementing material, and the mixing of fly ash cementing material, which can solve the problems of land occupation, poor storage management, secondary pollution, etc. problems, to achieve the effect of simple production, lower production costs, and meet building energy efficiency

Inactive Publication Date: 2020-05-15
TIANJIN BOHUA YONGLI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of desulfurized gypsum is stored and stacked, which not only occupies a large amount of land, but also may cause secondary pollution due to poor storage management

Method used

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  • Desulfurized gypsum and fly ash cementing material formula
  • Desulfurized gypsum and fly ash cementing material formula
  • Desulfurized gypsum and fly ash cementing material formula

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, the formula of the cementitious material is calculated by weight percentage: (SiO2, the mass fractions of CaO are respectively 50%, 6%) fly ash 20%, desulfurized gypsum 20%, (P.O.42.5) cement 26 %, water 21%, sand 12%, quicklime 1%.

Embodiment 2

[0020] Embodiment two, the formula of the cementitious material is calculated by weight percentage: (SiO2, the mass fraction of CaO are respectively 65%, 10%) fly ash 20%, desulfurized gypsum 20%, (P.O.42.5) cement 27% %, water 20%, sand 12%, quicklime 1%;

Embodiment 3

[0021] Embodiment three, the formula of the cementitious material is calculated by weight percentage: (SiO2, the mass fractions of CaO are respectively 58.2%, 7.4%) fly ash 20%, desulfurized gypsum 20%, (P.O.42.5) cement 28 %, water 19%, sand 12%, quicklime 1%;

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Abstract

The invention provides a desulfurized gypsum and fly ash cementing material formula. The desulfurized gypsum and fly ash cementing material formula comprises, by mass, 16-20% of fly ash, 16-20% of desulfurized gypsum, 26-34% of cement, 18-23% of water, 11-13% of sands and 1% of quick ime. Adopted desulfurized gypsum mainly comes from a byproduct desulfurized gypsum produced by a limestone (lime)-gypsum wet desulphurization process in a large-unit coal-fired power plant, is simple and convenient to manufacture, and only needs to uniformly stir fly ash, desulfurized gypsum, cement, water, sand and quicklime in proportion in advance. Compared with common concrete, the cementing material of the invention has the characteristics of production cost reduction, light weight and heat preservation.The formula solves the problem of treatment of desulfurized gypsum and fly ash, solves the problem of environmental pollution caused by solid wastes, protects cultivated land resources, realizes resource utilization of the solid wastes, and meets the requirement of building energy conservation.

Description

technical field [0001] The invention relates to a method for mixing fly ash cementing materials, in particular to a formula for making cementing materials from desulfurized gypsum produced by coal chemical industry and power plant fly ash, and coal-fired thermal power plants using limestone (lime)-gypsum wet desulfurization process The invention belongs to the technical field of civil engineering and building materials; in particular, it relates to a desulfurization gypsum fly ash cementing material formula. Background technique [0002] Concrete is one of the most important civil engineering materials today. It is composed of cementitious materials, granular aggregates (also known as aggregates), water, and additives and admixtures added when necessary, prepared in a certain proportion, uniformly stirred, densely formed, cured and hardened. artificial stone. In order to reduce the amount of cement, improve the workability of freshly mixed concrete, and improve the perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/08C04B111/40
CPCC04B28/144C04B2111/40C04B18/08C04B7/02C04B22/064C04B14/06Y02W30/91
Inventor 丁健庞栓林李治水李亚斌谢智勇梅述钘王松晓王建达唐晶晶李文兴
Owner TIANJIN BOHUA YONGLI CHEM IND
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