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A platform for research: civil engineering, architecture and urbanism
Bond shear fatigue behavior between ultra-high-performance concrete and normal strength substrate
Abstract In this study, the bond fatigue performance of ultra-high-performance concrete (UHPC) and normal-strength concrete (NSC) repair material is investigated based on the roughness factor. A single-side shear test is performed to evaluate the bond fatigue performance under stress levels of 0.7, 0.8, and 0.9. The results indicate that the NSC-NSC specimen exhibits a bond failure mode, whereas the UHPC-NSC specimen exhibits substrate failure or substrate and bond mixing failure. Roughness is a key factor affecting bond fatigue life. Fatigue life prediction equations for UHPC-NSC and NSC-NSC are developed. The overlay transition zone of UHPC-NSC is denser than that of NSC-NSC.
Highlights The single side shear test was used to evaluate bond fatigue performance. Ultra-high-performance concrete repair materials could increase bond fatigue life by more than 121%. Fatigue life prediction equations for UHPC-NSC and NSC-NSC were developed.
Bond shear fatigue behavior between ultra-high-performance concrete and normal strength substrate
Abstract In this study, the bond fatigue performance of ultra-high-performance concrete (UHPC) and normal-strength concrete (NSC) repair material is investigated based on the roughness factor. A single-side shear test is performed to evaluate the bond fatigue performance under stress levels of 0.7, 0.8, and 0.9. The results indicate that the NSC-NSC specimen exhibits a bond failure mode, whereas the UHPC-NSC specimen exhibits substrate failure or substrate and bond mixing failure. Roughness is a key factor affecting bond fatigue life. Fatigue life prediction equations for UHPC-NSC and NSC-NSC are developed. The overlay transition zone of UHPC-NSC is denser than that of NSC-NSC.
Highlights The single side shear test was used to evaluate bond fatigue performance. Ultra-high-performance concrete repair materials could increase bond fatigue life by more than 121%. Fatigue life prediction equations for UHPC-NSC and NSC-NSC were developed.
Bond shear fatigue behavior between ultra-high-performance concrete and normal strength substrate
Feng, Shuo (author) / Lyu, Jingjing (author) / Xiao, Huigang (author) / Zhang, Qingsong (author) / Bai, Jiwen (author) / Pei, Yan (author) / Chen, Mengjun (author) / Fan, Ling (author)
2024-01-08
Article (Journal)
Electronic Resource
English
| UB Braunschweig | 2021