National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China;Hunan Provincial Department of Education Science and Technology Program
Xiaowen ZHANG, Ya YAO, Cheng YI, et al. Radiation shielding efficiency and optimization of concrete incorporated with bismuth oxide[J]. Nuclear techniques, 2017, 40(6): 060201
DOI:
Xiaowen ZHANG, Ya YAO, Cheng YI, et al. Radiation shielding efficiency and optimization of concrete incorporated with bismuth oxide[J]. Nuclear techniques, 2017, 40(6): 060201 DOI: 10.11889/j.0253-3219.2017.hjs.40.060201.
Radiation shielding efficiency and optimization of concrete incorporated with bismuth oxide
将氧化铋以粉末形式添加到普通混凝土中,制备出绿色无污染且具有良好的g射线屏蔽性能的掺杂氧化铋的混凝土。相较于普通混凝土,氧化铋-混凝土的屏蔽性能及力学性能均得到改善。对比屏蔽性能实验结果及MCNP5(Monte Carlo N-Particle 5)模拟结果,二者相符很好,可以用MCNP5进行后期配合比设计优化。运用田口方法对水泥量、水胶比、氧化铋比例及砂率等进行优化设计。结果表明,对氧化铋-混凝土屏蔽能力影响最大的参数是氧化铋的加入量,其次为水泥量,水胶比及砂率的影响可忽略。
Abstract
Background
2
To enhance the shielding properties of concrete mixtures
there is a tendency toward using various additives while most of these additives being used either pose hygiene hazards or require special handling processes.
Purpose
2
To ensure the concretes being environmentally friendly and providing sufficient gamma ray radiation shielding efficiency
Bi
2
O
3
-loaded concrete mixtures are researched and optimized.
Methods
2
Both experimental and theoretical methods were used to calculate the linear attenuation coefficient before using the Taguchi method to optimize concrete's mix proportion which includes cement quantity
water-to-cementitious material ratio
Bi
2
O
3
rate and sand ratio.
Results
2
The shielding abilities and mechanical properties of Bi
2
O
3
-loaded concretes were improved compared with ordinary concrete. There was small inconsistency between results obtained by MCNP5 (Monte Carlo N-Particle 5) program and experiment.
Conclusion
2
It was suggested in the study that the most important parameter affecting the attenuation of the concrete's radiation is the Bi
2
O
3
rate while cement quantity is the following factors
and the effects of water-to-cementitious material ratio and sand ratio are negligible.
关键词
Keywords
references
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