C140 high-strength concrete and preparation method thereof

A technology of high-strength concrete and compressive strength, applied in the field of concrete, can solve the problems of shortage of resources, limited ways of fixing sulfur ash resources, and low utilization rate.

Inactive Publication Date: 2018-12-18
成都宏基建材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the problem of increasing shortage of traditional cement admixture resources such as mineral powder, fly ash, and silica fume, and the probl

Method used

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  • C140 high-strength concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A C140 high-strength concrete is composed of the following materials: 530 parts of cement, 55 parts of fly ash, 110 parts of mineral powder, 75 parts of sulfur-fixed ash, 30 parts of silica fume, 880 parts of coarse aggregate, 510 parts of fine aggregate, 6.4 parts of water agent, 13 parts of rust inhibitor, 80 parts of fiber, and 152 parts of water, calculated in parts by weight.

[0047] Among them, the cement is selected from P.O 525 cement, which is provided by Dujiangyan Lafarge Cement Co., Ltd. The performance test results are as follows: the standard consistency water demand is 27.1%, and the specific surface area is 373m 2 kg -1 , initial setting time 153min, final setting time 272min, 3-day flexural strength 6.1MPa, 28-day flexural strength 8.5MPa, 3-day compressive strength 31.5MPa, 28-day compressive strength 60.6MPa, SO 3 The content is 2.16% (≤3.5%), the MgO content is 2.54% (≤5%), and the stability is qualified.

[0048] Among them, the fly ash is select...

Embodiment 2

[0062] A C140 high-strength concrete is composed of the following materials: 510 parts of cement, 60 parts of fly ash, 115 parts of mineral powder, 80 parts of sulfur-fixing ash, 35 parts of silica fume, 880 parts of coarse aggregate, 510 parts of fine aggregate, 6.4 parts of water agent, 13 parts of rust inhibitor, 80 parts of fiber, and 152 parts of water, calculated in parts by weight.

[0063] Among them, the cement is selected from P.O 525 cement, which is provided by Dujiangyan Lafarge Cement Co., Ltd. The performance test results are as follows: the standard consistency water demand is 27.1%, and the specific surface area is 373m 2 kg -1 , initial setting time 153min, final setting time 272min, 3-day flexural strength 6.1MPa, 28-day flexural strength 8.5MPa, 3-day compressive strength 31.5MPa, 28-day compressive strength 60.6MPa, SO 3 The content is 2.16% (≤3.5%), the MgO content is 2.54% (≤5%), and the stability is qualified.

[0064] Among them, the fly ash is selec...

Embodiment 3

[0078] A C140 high-strength concrete is composed of the following materials: 550 parts of cement, 50 parts of fly ash, 105 parts of mineral powder, 70 parts of sulfur-fixing ash, 25 parts of silica fume, 880 parts of coarse aggregate, 510 parts of fine aggregate, 6.4 parts of water agent, 13 parts of rust inhibitor, 80 parts of fiber, and 152 parts of water, calculated in parts by weight.

[0079]Among them, the cement is selected from P.O 525 cement, which is provided by Dujiangyan Lafarge Cement Co., Ltd. The performance test results are as follows: the standard consistency water demand is 27.1%, and the specific surface area is 373m 2 kg -1 , initial setting time 153min, final setting time 272min, 3-day flexural strength 6.1MPa, 28-day flexural strength 8.5MPa, 3-day compressive strength 31.5MPa, 28-day compressive strength 60.6MPa, SO 3 The content is 2.16% (≤3.5%), the MgO content is 2.54% (≤5%), and the stability is qualified.

[0080] Among them, the fly ash is select...

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Abstract

The invention belongs to the field of concrete, and particularly discloses C140 high-strength concrete and a preparation method thereof. The concrete is prepared from the following materials in partsby weight: 490-570 parts of cement, 45-65 parts of coal ash, 100-120 parts of mineral powder, 65-85 parts of desulphurization ash, 20-40 parts of silica fume, 750-950 parts of coarse aggregate, 400-600 parts of fine aggregate, 5.5-7.5 parts of a water reducer, 10-20 parts of a corrosion inhibitor, 60-100 parts of fibers and 145-160 parts of water. The invention provides the C140 high-strength concrete; the concrete has a good slump, good extended degree, good compressive strength, and excellent comprehensive performance, and meanwhile, the problems of resource shortage of traditional cement admixtures of the mineral powder, the coal ash, the silica fume and the like, and limited resourced approaches and a low utilization rate of the desulphurization ash are solved.

Description

technical field [0001] The invention belongs to the field of concrete, and specifically discloses a C140 high-strength concrete and a preparation method thereof. Background technique [0002] High-strength concrete is concrete whose compressive strength reaches or exceeds 60MPa. As a new building material, high-strength concrete has been widely used in high-rise building structures, long-span bridge structures and some special structures due to its high compressive strength, strong deformation resistance, high density, and low porosity. application. [0003] At present, in the preparation technology of high-strength concrete, industrial solid wastes such as mineral powder, fly ash, and silica fume are often used as cement admixtures, and compounded with ordinary Portland cement in a certain proportion as cementitious materials. Compared with the use of ordinary Portland cement as cementitious material, the addition of mineral powder, fly ash, silica fume, etc. can replace ...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/52C04B18/141C04B18/08C04B18/064C04B18/146C04B14/048C04B14/068C04B24/122C04B2103/302C04B14/48
Inventor 肖超范长利张皓玉
Owner 成都宏基建材股份有限公司
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