Materials Reports  2022, Vol. 36 Issue (Z1): 20040024-5 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Study on Strain Rate Effect of Basalt Fiber Cement Composites After High Temperature Treatment |
| ZHANG Na1,2, ZHOU Jian2
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1 Department of Defense and Transportation, Army Military Transportation University, Tianjin 300161, China
2 School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China |
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Abstract In order to analyze the influence of high temperature and strain rate on the dynamic mechanical properties of basalt fiber cement composites, the quasi-static test was used to measure its uniaxial compressive strength, and the Φ50 mm split Hopkinson pressure bar (SHPB) was used to perform dynamic compression tests. The stress-strain curves of the material under different temperature conditions and different strain rates were analyzed. The dynamic increase factor (IDF) which changes with strain rates under different temperature conditions were analyzed. The results show that: the static compressive strength, the dynamic compressive strength of basalt fiber cement composites after high temperature and DIF increase with the strain rate increasing; in the range of 20—400 ℃, under the similar strain rate, the dynamic compressive strength of the basalt fiber cement composites reaches the maximum value at 200 ℃ and decrease then; DIF shows a trend of increasing first and decreasing then; compared with the DIF of ordinary concrete, the DIF of basalt fiber cement composites is smaller.
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Published: 05 June 2022
Online: 2022-06-08
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| Fund:National Natural Science Foundation of China(51878238). |
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