Low thermal micro-expansive cement based radiation shielding concrete and preparation method thereof
A technology of micro-expansion and concrete, applied in the field of concrete, can solve the problems of environmental pollution, land occupation, waste of resources, etc., achieve good radiation protection performance, save material costs, and reduce consumption
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Embodiment 1
[0034] A low-heat micro-expansion cement-based radiation-proof concrete, consisting 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, 150 parts of water, and parts by weight.
[0035] Among them, the cement is selected from Portland low-heat micro-expansion cement, provided by Wuxi Qingmei Building Materials Technology Co., Ltd. The performance test results are as follows: the specific surface area is 320m 2 kg -1 , MgO content 4.0%, SO 3 Content 2.6%, initial setting time 205min, final setting time 280min, 28d compressive strength 46.3MPa, 3d limited expansion rate 0.024%, 28d limited expansion rate 0.032%, 7d heat of hydration 198kJ / Kg, other properties all meet the requirements.
[0036] Among them, the fine aggregate is selected from the water-quenched copper slag after mechanical treatment, and the mechanical treatment method is as follows: first,...
Embodiment 2
[0045] A low-heat micro-expansion 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, 148 parts of water, and parts by weight.
[0046] Among them, the cement is selected from Portland low-heat micro-expansion cement, provided by Wuxi Qingmei Building Materials Technology Co., Ltd. The performance test results are as follows: the specific surface area is 320m 2 kg -1 , MgO content 4.0%, SO3 content 2.6%, initial setting time 205min, final setting time 280min, 28d compressive strength 46.3MPa, 3d limited expansion rate 0.024%, 28d limited expansion rate 0.032%, 7d heat of hydration 198kJ / Kg, Other properties meet the requirements.
[0047] Among them, the fine aggregate is selected from the water-quenched copper slag after mechanical treatment, and the mechanical treatment method is as follows: firs...
Embodiment 3
[0056] A low-heat micro-expansion 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, 152 parts of water, and parts by weight.
[0057] Among them, the cement is selected from Portland low-heat micro-expansion cement, provided by Wuxi Qingmei Building Materials Technology Co., Ltd. The performance test results are as follows: the specific surface area is 320m 2 kg -1 , MgO content 4.0%, SO3 content 2.6%, initial setting time 205min, final setting time 280min, 28d compressive strength 46.3MPa, 3d limited expansion rate 0.024%, 28d limited expansion rate 0.032%, 7d heat of hydration 198kJ / Kg, Other properties meet the requirements.
[0058]Among them, the fine aggregate is selected from the water-quenched copper slag after mechanical treatment, and the mechanical treatment method is as follows: first, the w...
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