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논문 기본 정보

자료유형
학술저널
저자정보
Ruiyuan Huang (Nanjing University of Science and Technology) Shichao Li (Nanjing University of Science and Technology) Long Meng (Nanjing University of Science and Technology) Dong Jiang (Beijing Institute of Space Long March Vehicle) Ping Li (Anhui University of Technology)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.14 No.5
발행연도
2020.9
수록면
813 - 827 (15page)

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The dynamic mechanical properties of steel fiber-reinforced concrete (SFRC) under high temperature and high strain rate were studied using a split Hopkinson pressure bar (SHPB) of 74 mm in diameter. As it is difficult to achieve constant strain rate loading in SHPB experiments with high temperature and high strain rate, this paper first presents a method for determining the strain rate under non-constant strain rate loading conditions. This method is proposed to deal with experimental data under non-constant strain rate loading conditions. Then, the influences of temperature on the ultimate compressive strength, peak strain, and failure modes of SFRC under different strain rates were analyzed and the results show that SFRC has a strain rate hardening effect. This paper also points out that there is a strain rate threshold for SFRC. If the strain rate is less than the strain rate threshold, there is a temperature softening effect. Conversely, if the strain rate is greater than the strain rate threshold, there is a temperature hardening effect. Finally, the relationship between the ultimate compressive strength and fiber volume fraction, strain rate, and temperature is presented and the prediction results are consistent with the experimental data.

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Abstract
1 Introduction
2 Experimental Investigation
3 Experimental Results and Discussion
4 Relationship Between Ultimate Compressive Strength and Fiber Volume Fraction, Strain Rate, and Temperature
References

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