Bond-slip Behaviour of NSM GFRP Bars in Reinforced Recycled-Aggregate Concrete: Experiments and a Modified Model
نویسندگان
چکیده
Bond-slip behaviour of glass fiber-reinforced polymer (GFRP) bars embedded in conventional concrete has been widely investigated. In contrast, the bond-slip near-surface mounted (NSM) GFRP bonded reinforced recycled aggregate (RAC) seems to be less explored, while materials have increasingly used due reasons environmental pollution and resource exhaustion. This study aimed experimentally theoretically examine NSM RAC under monotonic cyclic loadings. To achieve this aim, twenty-four tests were performed, which divided into two groups by each group, twelve performed on ten specimens normal (NAC) specimens. The test results confirmed brittle shear failure proximity a resin-concrete surface. can characterized nonlinear linear branches, branch dominates behaviour. Under loadings, average slips 0.238 0.284 mm, their coefficients variation (COV) relatively large at 0.142 0.130, respectively. ultimate loads had low COV around 0.038. effect loading significantly increased slip 19.3%, whereas it negligibly reduced load; consequently, stiffness was 19.4%. A modified smooth model proposed predict simplicity accuracy useful for engineers structural retrofitting using FRP technique. Doi: 10.28991/CEJ-2023-09-02-01 Full Text: PDF
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ژورنال
عنوان ژورنال: Civil Engineering Journal
سال: 2023
ISSN: ['2676-6957', '2476-3055']
DOI: https://doi.org/10.28991/cej-2023-09-02-01