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C80 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, and achieve the effects of reducing water demand, high resource value, and abundant hydration products.

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

AI Technical Summary

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 C80 high-strength concrete and its preparation method

Method used

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  • C80 high-strength concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A C80 high-strength concrete consisting of the following materials: 422 parts of cement, 85 parts of mineral powder, 35 parts of fly ash, 58 parts of sulfur-fixed ash, 1035 parts of coarse aggregate, 690 parts of fine aggregate, 3.8 parts of water reducer, 10 parts of rust inhibitor, 137 parts of water, calculated in parts by weight.

[0043] The cement is selected from P.O 42.5 cement, provided by Dujiangyan Lafarge Cement Co., Ltd., and its performance test results are as follows: standard consistency water demand 26.7%, specific surface area 369m 2 kg -1, initial setting time 170min, final setting time 246min, 3-day flexural strength 6.0MPa, 28-day flexural strength 8.3MPa, 3-day compressive strength 31.2MPa, 28-day compressive strength 50.1MPa, SO 3 The content is 2.03% (≤3.5%), the MgO content is 2.41% (≤5%), and the stability is qualified.

[0044] The slag powder is selected from S95 granulated blast furnace slag powder, provided by Chengdu Concrete New Buildin...

Embodiment 2

[0056] A C80 high-strength concrete, consisting of the following materials: 412 parts of cement, 90 parts of mineral powder, 38 parts of fly ash, 60 parts of sulfur-fixed ash, 1035 parts of coarse aggregate, 690 parts of fine aggregate, 3.8 parts of water reducing agent, 10 parts of rust inhibitor, 137 parts of water, calculated in parts by weight.

[0057] The cement is selected from P.O 42.5 cement, provided by Dujiangyan Lafarge Cement Co., Ltd., and its performance test results are as follows: standard consistency water demand 26.7%, specific surface area 369m 2 kg -1 , initial setting time 170min, final setting time 246min, 3-day flexural strength 6.0MPa, 28-day flexural strength 8.3MPa, 3-day compressive strength 31.2MPa, 28-day compressive strength 50.1MPa, SO 3 The content is 2.03% (≤3.5%), the MgO content is 2.41% (≤5%), and the stability is qualified.

[0058] The slag powder is selected from S95 granulated blast furnace slag powder, provided by Chengdu Concrete Ne...

Embodiment 3

[0070] A C80 high-strength concrete, consisting of the following materials: 432 parts of cement, 80 parts of mineral powder, 33 parts of fly ash, 55 parts of sulfur-fixed ash, 1035 parts of coarse aggregate, 690 parts of fine aggregate, 3.8 parts of water reducer, 10 parts of rust inhibitor, 137 parts of water, calculated in parts by weight.

[0071] The cement is selected from P.O 42.5 cement, provided by Dujiangyan Lafarge Cement Co., Ltd., and its performance test results are as follows: standard consistency water demand 26.7%, specific surface area 369m 2 kg -1 , initial setting time 170min, final setting time 246min, 3-day flexural strength 6.0MPa, 28-day flexural strength 8.3MPa, 3-day compressive strength 31.2MPa, 28-day compressive strength 50.1MPa, SO 3 The content is 2.03% (≤3.5%), the MgO content is 2.41% (≤5%), and the stability is qualified.

[0072] The slag powder is selected from S95 granulated blast furnace slag powder, provided by Chengdu Concrete New Build...

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Abstract

The invention belongs to the field of concrete, and particularly discloses C80 high-strength concrete and a preparation method thereof. The concrete is prepared from the following materials in parts by weight: 400-450 parts of cement, 75-95 parts of mineral powder, 30-40 parts of coal ash, 45-65 parts of desulphurization ash, 950-1100 parts of coarse aggregate, 650-750 parts of fine aggregate, 3-5parts of a water reducer, 5-15 parts of a corrosion inhibitor and 130-145 parts of water. The invention provides the C80 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 and the like, and limited resourced approaches and a low utilization rate of desulphurization ash are solved.

Description

technical field [0001] The invention belongs to the field of concrete, and specifically discloses a C80 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 p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/52C04B18/141C04B18/08C04B18/064C04B14/048C04B14/068C04B24/122C04B2103/302
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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