Effect of Fiber Blending Ratio on the Tensile Properties of Steel Fiber Hybrid Reinforced Cementitious Composites under Different Strain Rates
| Autor: | Sangkyu Lee, Gyu-Yong Kim, Yae-Chan Lee, Koichi Kobayashi, Hongseop Kim, Minjae Son, Jeongsoo Nam |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
endocrine system Toughness High strain rate Materials science Mixing (process engineering) Article synergistic effect Ultimate tensile strength General Materials Science Fiber Composite material hooked steel fiber Microscopy QC120-168.85 strain rate smooth steel fiber Strain (chemistry) QH201-278.5 Cementitious composite Strain rate Engineering (General). Civil engineering (General) fiber blending ratio TK1-9971 Descriptive and experimental mechanics Electrical engineering. Electronics. Nuclear engineering TA1-2040 |
| Zdroj: | Materials, Vol 14, Iss 4504, p 4504 (2021) Materials Volume 14 Issue 16 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14164504 |
| Popis: | In this study, a high-performance hybrid fiber-reinforced cementitious composite (HP-HFRCC) was prepared, by mixing hooked steel fiber (HSF) and smooth steel fiber (SSF) at different blending ratios, to evaluate the synergistic effect of the blending ratio between HSF and SSF and the strain rate on the tensile properties of HP-HFRCC. The experimental results showed that the micro- and macrocrack control capacities of HP-HFRCC varied depending on the blending ratio and strain rate, and the requirement for deriving the appropriate blending ratio was confirmed. Among the HP-HFRCC specimens, the specimen mixed with HSF 1.0 vol.% and SSF 1.0 vol.% (H1.0S1.0) exhibited a significant increase in the synergistic effect on the tensile properties at the high strain rate, as SSF controlled the microcracks and HSF controlled the macrocracks. Consequently, it exhibited the highest strain rate sensitivities of tensile strength, strain capacity, and peak toughness among the specimens evaluated in this study. |
| Databáze: | OpenAIRE |
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