Abstract
The uniaxial compressive response of steel-polypropylene hybrid fiber reinforced concrete (HFRC) and steel fiber-reinforced concrete (SFRC) was analyzed under high strain rate loading with a 74 mm diameter split Hopkinson pressure bar (SHPB). The experimental investigation focused on recorded data and resulted in distinguishing the strain rate that mobilized different ductility of steel-polypropylene hybrid fiber reinforced concrete (HFRC) and steel fiber-reinforced concrete (SFRC). 64 specimens of HFRC and SFRC with higher static compressive strength were tested at the strain rates changing from 20 to 120 s−1. The static compressive strength and dynamic stress-strain curves of the two materials were obtained at 4 different strain rates and the failure stress, and peak strain and peak toughness were also analyzed. The results show that HFRC has quite good dynamic mechanical property and clear strain-rate effect, and the failure mechanism of HFRC and SFRC was also compared based on the specimens’ failure modes in static and dynamic compressive tests.
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Funded by the Self-determined and Innovative Research Funds of WUT
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Ren, Z., Chen, M., Lu, Z. et al. Dynamic mechanical property of hybrid fiber reinforced concrete(HFRC). J. Wuhan Univ. Technol.-Mat. Sci. Edit. 27, 783–788 (2012). https://doi.org/10.1007/s11595-012-0548-6
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DOI: https://doi.org/10.1007/s11595-012-0548-6