High-strength fly ash cement

A fly ash cement, high-strength technology, applied in the field of cement, can solve the problem that the amount of fly ash mixed is not very high, the early strength of fly ash cement is reduced, and the operation performance of composite cement is affected. question

Inactive Publication Date: 2017-01-04
ANHUI GAODI BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The amount of fly ash mixed in the existing fly ash cement is not very high, because a large amount of fly ash will lead to a significant reduction in the early strength of the final formed fly ash cement
Now due to the extensive use of coal, a large amount of fly ash produced after coal combustion needs to be treated urgently. At the same time, because fly ash contains a large amount of alumina Al2O3 and sulfur oxide SiO2, it will affect the operability of the composite cement after configuration. The flow properties of the composite cement in the construction, as well as the molding time of the cement in use and the composition of the composite cement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] First, 10 parts of alunite, 25 parts of aluminum sulfate, 10 parts of calcium chloride, 0.5 parts of activator, and 5 parts of methyl acrylate are stirred and mixed to prepare the activator, and then the following components are pulverized and mixed according to the weight ratio. Fly ash is 35%, iron ore slag is 15%, cement clinker is 42%, yellow sand is 3%, gypsum is 4.5%, and activator is 0.5%.

Embodiment 2

[0009] Firstly, 30 parts of alunite, 15 parts of aluminum sulfate, 20 parts of calcium chloride, 1.5 parts of activator, and 10 parts of methyl acrylate are stirred and mixed to prepare the activator, and then the following components are pulverized and mixed according to the weight ratio. Fly ash is 42%, iron ore slag is 12%, cement clinker is 38%, yellow sand is 4%, gypsum is 3%, and activator is 1%.

Embodiment 3

[0011] First, 25 parts of alunite, 30 parts of aluminum sulfate, 15 parts of calcium chloride, 1 part of activator, and 8 parts of methyl acrylate are stirred and mixed to prepare the activator, and then the following components are pulverized and mixed according to the weight ratio. Fly ash is 34%, iron ore slag is 10%, cement clinker is 46%, yellow sand is 5%, gypsum is 4.5%, and activator is 0.5%.

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PUM

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Abstract

A high-strength fly ash cement is prepared from, by weight, 35-42% of fly ash, 10-15% of iron ore slag, 38-46% of cement clinker, 3-5% of yellow sand, 3-5% of gypsum and 0.5-1% of an activator, wherein the activator is obtained by mixing 10-30 parts of alunite, 15-30 parts of aluminum sulfate, 10-20 parts of calcium chloride, 0.5-1.5 parts of an activating agent and 5-10 parts of methyl acrylate. The high-strength fly ash cement is high in fly ash content, and thus a large amount of fly ash can be well effectively utilized; meanwhile, the requirement for high strength of ordinary Portland cement can be met.

Description

technical field [0001] The invention relates to the technical field of cement, in particular to a high-strength fly ash cement. Background technique [0002] The mixing amount of fly ash in the existing fly ash cement is not very high, because a large amount of fly ash will lead to a significant reduction in the early strength of the final formed fly ash cement. Now due to the extensive use of coal, a large amount of fly ash produced after coal combustion needs to be treated urgently. At the same time, because fly ash contains a large amount of alumina Al2O3 and sulfur oxide SiO2, it will affect the operability of the composite cement after configuration. The flow properties of the composite cement in the construction, as well as the molding time of the cement in use and the composite cement. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a high-strength fly ash cement....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26
CPCC04B7/26Y02P40/10
Inventor 胡成朔高文忠郑海波梁本怀
Owner ANHUI GAODI BUILDING MATERIAL CO LTD
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