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Concrete for shielding radiation

A technology for shielding radiation and concrete, applied in the field of concrete, can solve the problems of difficulty in shielding radiation from linear accelerators and low concrete bulk density, and achieve the effect of reducing the risk of cracking, reducing the risk of cracking, and reducing the heat of hydration

Inactive Publication Date: 2020-10-23
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects existing in the prior art, a kind of concrete used for shielding radiation is provided to solve the problem that conventional concrete has low bulk density and is difficult to meet the requirements of shielding linear accelerator radiation

Method used

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Effect test

Embodiment 1

[0036] The invention provides a kind of concrete that is used for shielding radiation, and its raw material components are calculated by weight, including: 1339 parts of barite coarse aggregate, 930 parts of sandstone fine aggregate, 264 parts of Portland cement, 176 parts of fly ash, 49 parts of expansion agent, 1 part of polypropylene fiber, 5.3 parts of water reducer, 10.7 parts of self-healing microcapsules and 145 parts of water.

Embodiment 2

[0038] The invention provides a kind of concrete used for shielding radiation. The components of the raw materials include: 955 parts of barite coarse aggregate, 630 parts of sandstone coarse aggregate, 905 parts of barite Fine aggregate, 269 parts of Portland cement, 73 parts of fly ash, 40 parts of expansion agent, 1 part of polypropylene fiber, 4.5 parts of water reducing agent, 11 parts of self-healing microcapsules and 153 parts of water.

Embodiment 3

[0040] The invention provides a kind of concrete used for shielding radiation. The components of the raw materials include: 835 parts of barite coarse aggregate, 550 parts of sandstone coarse aggregate, 760 parts of barite Fine aggregate, 800 parts of sand and gravel fine aggregate, 166 parts of Portland cement, 66 parts of fly ash, 100 parts of slag powder, 26.6 parts of expansion agent, 1 part of polypropylene fiber, 3.9 parts of reducing Aqua, 11 parts of self-healing microcapsules and 160 parts of water.

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Abstract

The invention provides concrete for shielding radiation. The concrete is prepared from coarse aggregate, fine aggregate, a cementing material, coal ash, superfine slag powder, an expanding agent, polypropylene fibers, a water reducing agent, self-healing microcapsules and water, wherein the coarse aggregate comprises barite and sandstone, the fine aggregate comprises barite and sandstone, the cementing material comprises Portland cement, the self-healing microcapsule comprises a capsule shell and a glue solution poured into the capsule shell, and the glue solution is a lithium silicate solution or a mixed solution of lithium silicate and sodium silicate. The invention solves the problems of low volume weight and difficulty in shielding linear accelerator radiation of the conventional concrete.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a concrete used for shielding radiation. Background technique [0002] The large-volume concrete used for radiation shielding of linear accelerators in hospitals is used to shield the harmful radiation that may be generated during the operation of linear accelerators, so that when the later projects are put into use, radiation safety protection can be provided for the crowd. The concrete used for radiation shielding of linear accelerators has the overall characteristics of large thickness, high density, and no cracks after hardening, and the specific density of concrete is required to reach 2900kg / m 3 . [0003] The bulk density of concrete commonly used at present is usually 2400kg / m 3 Below, it is therefore difficult to meet the requirements for shielding radiation. Contents of the invention [0004] In order to overcome the defects in the prior art, a concre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00862
Inventor 王进连春明吴世通刘洋洋葛杰李劢
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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