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C120 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 low utilization rate, shortage of resources, and limited ways of recycling sulfur-fixing ash

Inactive Publication Date: 2019-01-01
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 problem of limited resource utilization and low utilization rate of sulfur-fixed ash, the present invention provides a C120 high-strength concrete and its preparation method

Method used

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  • C120 high-strength concrete and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A C120 high-strength concrete is composed of the following materials: 475 parts of cement, 45 parts of fly ash, 100 parts of mineral powder, 65 parts of sulfur-fixing ash, 30 parts of silica fume, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water agent, 11 parts of rust inhibitor, and 138 parts of water, calculated in parts by weight.

[0045] 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.

[0046] Among them, the fly ash is selected from the undis...

Embodiment 2

[0059] A C120 high-strength concrete is composed of the following materials: 455 parts of cement, 50 parts of fly ash, 105 parts of mineral powder, 70 parts of sulfur-fixing ash, 35 parts of silica fume, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water agent, 11 parts of rust inhibitor, and 138 parts of water, calculated in parts by weight.

[0060] 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.

[0061] Among them, the fly ash is selected from the undis...

Embodiment 3

[0074] A C120 high-strength concrete is composed of the following materials: 495 parts of cement, 40 parts of fly ash, 95 parts of mineral powder, 60 parts of sulfur-fixing ash, 25 parts of silica fume, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water agent, 11 parts of rust inhibitor, and 138 parts of water, calculated in parts by weight.

[0075] 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.

[0076] Among them, the fly ash is selected from the undist...

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Abstract

The invention belongs to the field of concrete, and particularly discloses C120 high-strength concrete and a preparation method thereof. The concrete is prepared from the following materials in partsby weight: 435-515 parts of cement, 35-55 parts of coal ash, 90-110 parts of mineral powder, 55-75 parts of solid sulfur ash, 20-40 parts of silicon ash, 900-1,100 parts of coarse aggregate, 450-650 parts of fine aggregate, 4.5-6.5 parts of a water reducing agent, 10-20 parts of a corrosion inhibitor and 130-150 parts of water. According to the C120 high-strength concrete provided by the invention, the concrete has good collapsbillity, expansion degree and compressive strength, is excellent in comprehensive properties, and simultaneously overcomes the problems that traditional cement admixtureresources such as the coal ash, the mineral powder and the silicon ash are scarce, the recycling approaches of the solid sulfur ash are limited and the use ratio is low.

Description

technical field [0001] The invention belongs to the field of concrete, and specifically discloses a C120 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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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/08C04B18/142C04B18/064C04B18/146C04B18/12C04B14/068C04B24/24C04B24/122
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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