抗弯强度
抗压强度
电磁屏蔽
耐久性
极限抗拉强度
材料科学
钛铁矿
辐射屏蔽
复合材料
矿物学
化学
作者
Min Zhou,Tengyu Yang,Jinhui Li,Qiu Bing,Wenjun Qiu,Baiyun Li,Benan Shu,Jinhua Gong,Lixian Guo,Yongliang Li
出处
期刊:Coatings
[Multidisciplinary Digital Publishing Institute]
日期:2023-05-11
卷期号:13 (5): 906-906
被引量:5
标识
DOI:10.3390/coatings13050906
摘要
With the continuous development of nuclear technology, it is necessary to urgently solve the nuclear safety problem. γ-rays have a strong penetrating power. The γ-ray-shielding performance of ordinary concrete prepared with natural sand is weak and cannot meet the practical application of engineering. The γ-ray shielding performance of concrete can be effectively improved through the use of titaniferous sand with a better γ-ray protection effect. To prepare ultra-high-performance concrete (UHPC) that can provide radiation protection, the influence law of its performance was investigated. The effects of ilmenite sand on the workability, mechanical properties, durability, and radiation-shielding properties of UHPC were investigated via mix testing, compressive strength and flexural strength testing, and a radiation-shielding simulation. The results show that an appropriate amount of ilmenite sand can improve the ultra-high-performance concrete’s work performance; however, ilmenite sand has little effect on its compressive strength. Although it is not conducive to the development of flexural and tensile strength, the γ-ray shielding performance of the UHPC increases with an increase in the addition of ilmenite sand. When the titanite sand admixture is 70%, the γ-ray linear absorption coefficient of the prepared UHPC is 0.158 cm−1, and the γ-ray shielding performance is significantly improved; meanwhile, its durability performance is excellent.
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