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- W4386491505 abstract "The purpose of this study was to investigate the dynamic compression characteristics of steel fiber-reinforced rubber self-compacting concrete (SFRSCC) after exposure to high temperatures by using the split Hopkinson pressure bar (SHPB) impact test. The study considered four parameters: strain rates of 55 s−1, 90 s−1, and 155 s−1; volume fractions of steel fibers of 0%, 0.5%, 1.0%, and 1.5%; volume fractions of rubber contents of 0%, 10%, 20%, and 30%; and temperatures of 25 ℃, 300 ℃, 600 ℃, and 900 ℃. Experimental results revealed that: (I) The toughening effect of rubber decreases after exposure to high temperature, which decreases the specimens' dynamic compressive strength and toughness index after high temperature with the increase of rubber content. (II) The dynamic compressive strength, toughness index, and dynamic increase factor (DIF) of the specimens increased with the increasing steel fiber content after exposure to the same temperature. (III) The dynamic compressive strength of the specimens decreased linearly as the temperature increased, and the toughness index initially increased and then decreased. However, the incorporation of steel fiber mitigated this reduction. (IV) The impact of strain rate on compressive strength, toughness index, and DIF-σ was more significant for specimens exposed to high temperatures than for those at room temperature Finally, a stress–strain curve prediction formula considering temperature, rubber content, steel fiber content, and strain rate of SFRSCC was proposed." @default.
- W4386491505 created "2023-09-07" @default.
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- W4386491505 date "2023-11-01" @default.
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- W4386491505 title "Dynamic stress-strain relationship of steel fiber-reinforced rubber self-compacting concrete after exposure to high temperature" @default.
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- W4386491505 doi "https://doi.org/10.1016/j.istruc.2023.105118" @default.
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