NDLI: Effect of Fiber Blending Ratio on the Tensile Properties of Steel Fiber Hybrid Reinforced Cementitious Composites under Different Strain Rates

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Effect of Fiber Blending Ratio on the Tensile Properties of Steel Fiber Hybrid Reinforced Cementitious Composites under Different Strain Rates

Content Provider	MDPI
Author	Son, Minjae Kim, Gyuyong Kim, Hong Seop Lee, Sangkyu Lee, Yaechan Nam, Jeongsoo Kobayashi, Koichi
Copyright Year	2021
Description	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.
Starting Page	4504
e-ISSN	19961944
DOI	10.3390/ma14164504
Journal	Materials
Issue Number	16
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2021-08-11
Access Restriction	Open
Subject Keyword	Materials Fiber Blending Ratio Strain Rate Hooked Steel Fiber Smooth Steel Fiber Synergistic Effect
Content Type	Text
Resource Type	Article

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