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Radiation-proof concrete capable of reducing secondary radiation and preparation method of concrete

A secondary radiation and radiation protection technology, applied in the field of construction, can solve problems such as the decline of shielding performance and affect the setting time, and achieve the effects of reducing secondary radiation, improving work performance and reducing slump.

Inactive Publication Date: 2019-04-05
北京新时代寰宇科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although barite concrete is an ideal anti-radiation concrete, its shielding performance tends to decline as the number of freeze-thaw cycles increases; , seriously affecting its setting time

Method used

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  • Radiation-proof concrete capable of reducing secondary radiation and preparation method of concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Radiation-resistant concrete product 1 is prepared by the following method:

[0036] (1) In parts by weight, weigh 100 parts of high alumina cement, 40 parts of borax, 50 parts of steel slag micropowder, 140 parts of slag micropowder, 10 parts of steel fiber, 2 parts of water reducer, 2 parts of early strength agent and 8 parts of retarder Parts, add to the stirring tank for pre-mixing and stirring to obtain the mixture;

[0037](2) Then add 500 parts of barite and 80 parts of alumina ceramics into the stirring tank, fully mix and stir in the stirring tank, add water while stirring, add water to a total of 100 parts, control the stirring time of the whole feeding process to 30-60s ;

[0038] (3) Inject the slurry obtained in the previous step into a mold, and use heat preservation and moisturizing curing, and the watering and curing time must not be less than 14 days (to avoid the temperature difference between the inside and outside of the concrete), and the radiation...

Embodiment 2

[0040] Radiation-resistant concrete product 2 is prepared by the following method:

[0041] (1) In parts by weight, weigh 200 parts of high alumina cement, 15 parts of borax, 120 parts of steel slag powder, 70 parts of slag powder, 30 parts of steel fiber, 8 parts of water reducing agent, 2 parts of early strength agent and 2 parts of retarder. Parts, add to the stirring tank for pre-mixing and stirring to obtain the mixture;

[0042] (2) Then add 700 parts of barite and 160 parts of alumina ceramics into the stirring tank, fully mix and stir in the stirring tank, add water while stirring, add water to a total of 200 parts, control the stirring time of the whole feeding process to 30-60s ;

[0043] (3) Inject the slurry obtained in the previous step into a mold, and use heat preservation and moisturizing curing, and the watering and curing time must not be less than 14 days (to avoid the temperature difference between the inside and outside of the concrete), and the radiation...

Embodiment 3

[0045] Radiation-resistant concrete product 3 is prepared by the following method:

[0046] (1) In parts by weight, weigh 150 parts of high alumina cement, 30 parts of borax, 100 parts of steel slag micropowder, 100 parts of slag micropowder, 10 parts of steel fiber, 6 parts of water reducer, 8 parts of early strength agent and 2 parts of retarder Parts, add to the stirring tank for pre-mixing and stirring to obtain the mixture;

[0047] (2) Then add 600 parts of barite and 130 parts of alumina ceramics into the stirring tank, fully mix and stir in the stirring tank, add water while stirring, add water to a total of 200 parts, control the stirring time of the whole feeding process to 30-60s ;

[0048] (3) Inject the slurry obtained in the previous step into a mold, and use heat preservation and moisturizing curing, and the watering and curing time must not be less than 14 days (to avoid the temperature difference between the inside and outside of the concrete), and the radiat...

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Abstract

The invention discloses radiation-proof concrete capable of reducing secondary radiation and a preparation method of the concrete, and belongs to the field of buildings. The concrete comprises the following raw materials in parts by weight: 100-200 parts of high aluminum cement, 500-700 parts of barite, 80-160 parts of alumina ceramics, 15-40 parts of borax, 50-120 parts of steel slag micro-powder, 70-140 parts of slag micro-powder, 10-30 parts of steel fibers, 2-8 parts of water reducers, 2-8 parts of early strength agents, 2-8 parts of retarders and 100-200 parts of water. The radiation-proof concrete has the comprehensive advantages of no secondary radiation, large apparent density, strong gamma and neutron radiation resistance, high compressive strength, fire resistance, high temperature resistance, crack resistance and deformation resistance, good working performance, simple and convenient construction, low cost, environmental protection, innocuity and the like, and is suitable for occasions such as hospital engineering, military engineering, security engineering and the like which need to resist multiple radiation hazards and the like.

Description

technical field [0001] The invention relates to the construction field, in particular to a radiation-proof concrete capable of reducing secondary radiation and a preparation method thereof. Background technique [0002] With the rapid development of the world economy and the rapid changes in the world pattern, a large number of nuclear power projects such as nuclear power plants, atomic energy industry, nuclear reactors, etc. have risen rapidly, and nuclear radiation has become one of the culprits of human health threats. For example, in March 2011, a magnitude 9 earthquake occurred in Japan, which triggered a tsunami and nuclear power plant explosion, resulting in nuclear leakage, which had a catastrophic impact on the atmosphere and marine environment. For national defense and military processes and industrial and civil construction, the prevention of nuclear radiation cannot be ignored, and countries all over the world have gradually realized the importance of radiation-p...

Claims

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Application Information

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IPC IPC(8): C04B28/06
CPCC04B24/122C04B28/06C04B2111/00862C04B2201/50C04B22/142C04B18/023C04B18/142C04B18/141C04B2103/302C04B22/16
Inventor 杨李宁胡宝苓杨康张迎新田俊岭
Owner 北京新时代寰宇科技发展有限公司
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