Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bond Behavior of CFRP Sheets Attached to Concrete through EBR and EBROG Joints Subject to Mixed-Mode I/II Loading
The bond behavior of carbon fiber–reinforced polymer (CFRP) sheets attached to concrete surface subject to mixed-mode I/II loading through single lap-shear tests is assessed. A 63 concrete prism specimens of were prepared through externally bonded reinforcement (EBR) and externally bonded reinforcement on grooves (EBROG) techniques, using CFRP sheets of constant width and bond lengths. To instigate mode I loading, 31 of the specimens were tested in a manner that the loaded end of FRP sheets were angled inward to ; while in 24 of the specimens, the FRP strips were angled outward 2.4–4.7 degrees. By applying a noncontact digital image correlation (DIC) technique, load-slip responses of both EBR and EBROG joints were obtained and are discussed in detail. The failure criteria for CFRP sheets attached to a concrete substrate applying different bonding techniques subject to mixed-mode I/II loading are developed based on the experimental results. In general, it was observed that the EBROG technique in mixed-mode I/II loading improves the FRP-concrete bond strength by delaying or fully eliminating the inappropriate debonding failure mode.
Bond Behavior of CFRP Sheets Attached to Concrete through EBR and EBROG Joints Subject to Mixed-Mode I/II Loading
The bond behavior of carbon fiber–reinforced polymer (CFRP) sheets attached to concrete surface subject to mixed-mode I/II loading through single lap-shear tests is assessed. A 63 concrete prism specimens of were prepared through externally bonded reinforcement (EBR) and externally bonded reinforcement on grooves (EBROG) techniques, using CFRP sheets of constant width and bond lengths. To instigate mode I loading, 31 of the specimens were tested in a manner that the loaded end of FRP sheets were angled inward to ; while in 24 of the specimens, the FRP strips were angled outward 2.4–4.7 degrees. By applying a noncontact digital image correlation (DIC) technique, load-slip responses of both EBR and EBROG joints were obtained and are discussed in detail. The failure criteria for CFRP sheets attached to a concrete substrate applying different bonding techniques subject to mixed-mode I/II loading are developed based on the experimental results. In general, it was observed that the EBROG technique in mixed-mode I/II loading improves the FRP-concrete bond strength by delaying or fully eliminating the inappropriate debonding failure mode.
Bond Behavior of CFRP Sheets Attached to Concrete through EBR and EBROG Joints Subject to Mixed-Mode I/II Loading
Ghorbani, Majid (Autor:in) / Mostofinejad, Davood (Autor:in) / Hosseini, Ardalan (Autor:in)
15.04.2017
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Bond mechanism of EBROG method using a single groove to attach CFRP sheets on concrete
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Experimental and analytical study on CFRP strips-to-concrete bonded joints using EBROG method
| British Library Online Contents | 2019