Comparative study on the bond performance of near-surface mounted fiber-reinforced polymer bars
المؤلف | Aljidda, Omar |
المؤلف | El Refai, Ahmed |
المؤلف | Alnahhal, Wael |
تاريخ الإتاحة | 2024-08-08T05:23:23Z |
تاريخ النشر | 2023 |
اسم المنشور | Construction and Building Materials |
المصدر | Scopus |
الرقم المعياري الدولي للكتاب | 9500618 |
الملخص | This paper presents the experimental and analytical results of a large study on the bond performance of near-surface mounted (NSM) fiber-reinforced polymer (FRP) bars. The investigated parameters included the bar material (basalt-FRP (BFRP), glass-FRP (GFRP), carbon-FRP (CFRP), and stainless steel (SS) bars), the bar surface configuration (deformed and sand-coated bars), the filling adhesive (NSM-Gel, Sikadur-30, and Sika Grout-214), and the bonded length of the bar (6, 12, and 24 times its diameter). Sixty-six C-shape concrete specimens were tested under direct pullout loading configuration. The bond strength, the free-end and loaded-end slip, the strains in the NSM bar, and the modes of failure of the tested specimens are reported and discussed. The NSM-Gel adhesive outperformed other adhesives in developing the bond strength of the tested specimens regardless of their bar material. Both the deformed and sand-coated NSM-BFRP and GFRP bars showed almost similar bond strengths while the NSM-CFRP bars showed the highest strengths. The images obtained from the scanning electron microscope confirmed the obtained results in terms of the modes of failure and the bond failure mechanism. Analytically, the BPE model was calibrated using the experimental results to describe the bond stress-slip relationships of the FRP bars. |
راعي المشروع | The authors would like to acknowledge the financial support provided by Qatar University (Fund No. QUST-1-CENG-2020-17) rewarded by the third author and the Natural Sciences and Engineering Research Council of Canada (NSERC) through their Discovery Grants Program - Award No. RGPIN-2017-04278 rewarded by the second author. |
اللغة | en |
الناشر | Elsevier |
الموضوع | Adhesive Basalt Bond BPE model Epoxy Fiber-reinforced polymer Near-surface mounted technique Pullout Slip Strengthening |
النوع | Article |
رقم المجلد | 364 |
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