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2013•Journal of Guangzhou UniversityRequires access

SHPB experiment of steel fiber reactive powder concrete

Lei Chuan-zhang

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Abstract

The dynamic compression mechanical properties of SFRPC were studied by the split Hopkinson press bar testing method with the strain rates of 10·s-1~120·s-1.The experimental results show that the dynamic compressive strength of SFRPC increases as the steel fiber volume fractions increase under the impact loading,and the toughness increase is particularly significant.Furthermore,it is found that SFRPC has a significant effect of strain-rate hardening,and the strain-rate sensitivity threshold value are obtained from the experimental data.

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The dynamic compression mechanical properties of SFRPC were studied by the split Hopkinson press bar testing method with the strain rates of 10·s-1~120·s-1.The experimental results show that the dynamic compressive strength of SFRPC increases as the steel fiber volume fractions increase under the impact loading,and the toughness increase is particularly significant.Furthermore,it is found that SFRPC has a significant effect of strain-rate hardening,and the strain-rate sensitivity threshold value are obtained from the experimental data.

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Available abstract

The dynamic compression mechanical properties of SFRPC were studied by the split Hopkinson press bar testing method with the strain rates of 10·s-1~120·s-1.The experimental results show that the dynamic compressive strength of SFRPC increases as the steel fiber volume fractions increase under the impact loading,and the toughness increase is particularly significant.Furthermore,it is found that SFRPC has a significant effect of strain-rate hardening,and the strain-rate sensitivity threshold value are obtained from the experimental data.

Key concepts: Materials science, Split-Hopkinson pressure bar, Composite material, Strain rate, Toughness, Strain hardening exponent, Hardening (computing), Dynamic range compression

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