Requirements of specimen dimension considering maximum coarse aggregate size for concrete split Hopkinson pressure bar tests

被引：7
作者：
Kim, Kyoung-Min [1 ]
Lee, Sangho [2 ]
Yu, Yongjae [3 ]
Cho, Jae-Yeol [4 ]
机构：
[1] Seoul Natl Univ, Dept Civil & Environm Engn, 316-406, Gwanak Ro 1, Seoul 08826, South Korea
[2] Seoul Natl Univ, Inst Construct & Environm Engn, 316-406, Gwanak Ro 1, Seoul 08826, South Korea
[3] Univ Texas Austin, Dept Civil Architectural & Environm Engn, Austin, TX 78712 USA
[4] Seoul Natl Univ, Dept Civil & Environm Engn, 35-312, Gwanak-Ro 1, Seoul 08826, South Korea
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 383卷
关键词：
Concrete dynamic compressive strength; Dynamic increase factor; Split Hopkinson pressure bar test; Maximum coarse aggregate size; Standard test method; COMPRESSIVE STRENGTH ENHANCEMENT; PULSE-SHAPING TECHNIQUE; STRAIN-RATE; BEHAVIOR; MORTAR; MODEL;
D O I：
10.1016/j.conbuildmat.2023.131359
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Dynamic increase factors (DIF) of concrete compressive strength have been proposed through experiments on specimens including small aggregates without considering the effect of the coarse aggregate size, which was due to the limitations in the size of specimens and test apparatus. Therefore, this study conducted an experimental investigation of the effect of the maximum coarse aggregate size (Gmax) on the DIF of normal-strength concrete. Split Hopkinson pressure bar (SHPB) tests were performed for mortar and concrete specimens with various sizes of Gmax, and the apparent and pure rate DIFs were obtained. Moreover, the pure rate DIF of each Gmax was verified through numerical analysis of the SHPB tests. The test and analysis results indicated that Gmax affected the dispersion of the apparent DIF and the values of the pure rate DIF. Based on these results, a guideline for the fabrication of specimens considering Gmax for concrete SHPB tests was suggested.
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页数：11
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