Experimental Study on Dynamic Compression Performance of Coral Aggregate Concrete

被引：0
|
作者：
Wu W. [1 ,2 ,3 ]
Wang R. [1 ,2 ]
Zhu C. [1 ,2 ]
Meng Q. [1 ,2 ]
Liu H. [1 ,2 ,3 ]
机构：
[1] Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan
[2] State Key Laboratory of Geomechanics and Geotechnical Engineering, Wuhan
[3] University of Chinese Academy of Sciences, Beijing
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2019年 / 22卷 / 01期
关键词：
Coral aggregate concrete; Dynamic strength increase factor; Energy density; Impact resistance; Split Hopkinson pressure bar(SHPB); Strain rate;
D O I：
10.3969/j.issn.1007-9629.2019.01.002
中图分类号：
学科分类号：
摘要：
In order to explore the dynamic mechanical properties of coral aggregate concrete under impact loading, the split Hopkinson pressure bar(SHPB) test system was used to study the relationship between the dynamic strength increase factor and energy density and the strain rate of the concrete using coral reefs and sand as coarse and fine aggregates. Compared with ordinary sandstone concrete with the same strength grade, the results show that: the dynamic strength increase factor of coral aggregate concrete shows stronger sensitivity to the corresponding variability; the dynamic strength increase factor and the strain rate of the two types of concrete show logarithmic relation, the functional relationship shows a linear relationship between energy density and strain rate. Under the same strain rate conditions, coral aggregate concrete has higher ability for impact energy absorption, and the crushing degree is weaker than ordinary sandstone concrete, showing better impact resistance. © 2019, Editorial Department of Journal of Building Materials. All right reserved.
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页码：7 / 14
页数：7
相关论文
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