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Ordinary Portland cement-based radiation-proof concrete and preparation method thereof

A common portland cement and concrete technology, applied in the field of concrete, can solve the problems of land occupation, environmental pollution, resource waste, etc., and achieve the effects of saving material costs, good radiation protection performance, and reducing consumption

Inactive Publication Date: 2019-02-15
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

The annual discharge of copper slag in my country is huge, and most of them are in the state of accumulation and storage. At present, the stock of copper slag in my country has already exceeded 50 million tons, which not only occupies land, pollutes the environment, but also causes a huge waste of resources.

Method used

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  • Ordinary Portland cement-based radiation-proof concrete and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An ordinary Portland cement-based radiation-proof concrete, which is composed of the following materials: 300 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate, 18 parts of neutron absorber, 0.5 part of water reducing agent, and 150 parts of water, In parts by weight.

[0035] Among them, 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.

[0036] Among them, the fine aggregate is selected from the water-quenched copper slag after mechanical treatment, and the mechanical treatment metho...

Embodiment 2

[0045] An ordinary Portland cement-based radiation-proof concrete, which is composed of the following materials: 290 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate, 18 parts of neutron absorber, 0.5 part of water reducing agent, and 148 parts of water, In parts by weight.

[0046] Among them, 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.

[0047] Among them, the fine aggregate is selected from the water-quenched copper slag after mechanical treatment, and the mechanical treatment metho...

Embodiment 3

[0056] An ordinary Portland cement-based radiation-proof concrete, consisting of the following materials: 310 parts of cement, 1000 parts of fine aggregate, 1300 parts of coarse aggregate, 18 parts of neutron absorber, 0.5 part of water reducing agent, and 152 parts of water, In parts by weight.

[0057] Among them, 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]Among them, the fine aggregate is selected from the water-quenched copper slag after mechanical treatment, and the mechanical treatment method is as ...

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Abstract

The invention belongs to the field of concrete, and particularly discloses ordinary Portland cement-based radiation-proof concrete and a preparation method thereof. The concrete is prepared from the following materials in parts by weight: 280-320 parts of cement, 900-1,200 parts of fine aggregate, 1,200-1,500 parts of coarse aggregate, 10-20 parts of a neutron absorbent, 0.4-0.6 parts of a water reducing agent and 140-160 parts of water. The ordinary Portland cement-based radiation-proof concrete meets the strength requirement of C30 concrete, is segregation-free, has good slump and expansion,and has bulk density of 2800-2900 kg.m<3>, and meets the requirement of radiation protection concrete for bulk density; besides, the concrete has the characteristics of excellent working performance,good radiation protection performance, low cost and the like, and the problems that traditional radiation protection concrete is prone to segregation, poor in homogeneity, poor in construction performance and the like are solved.

Description

technical field [0001] The invention belongs to the field of concrete, and specifically discloses a common Portland cement-based radiation-proof concrete and a preparation method thereof. Background technique [0002] Radiation exists throughout the universe and can be divided into natural radiation and artificial radiation. Natural radiation mainly comes from cosmic rays, etc. Artificial radiation mainly comes from α, β, γ, X and neutron streams and other rays produced in the process of applying nuclear technology in nuclear power, military, education, medical treatment, scientific research and other fields. After being exposed to these rays for a long time, it is easy to induce cancer, leukemia, thyroid dysfunction, infertility, birth defects and other diseases, and it is also easy to induce gene mutations in other animals or plants. In order to prevent radiation from harming human beings, when building buildings with radiation sources, it is generally necessary to instal...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00258C04B2201/20C04B2201/50C04B18/144C04B14/14C04B22/08C04B20/0076C04B2103/302
Inventor 肖超黄俊
Owner 成都宏基建材股份有限公司
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