نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه صنعتی اصفهان، دانشکده مهندسی عمران
2 دانشگاه صنعتی اصفهان
3 هیات علمی گروه عمران دانشگاه صنعتی اصفهان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In the strengthening of RC structures with fibre-reinforced polymer (FRP) sheets, it is crucial to prevent the premature deboning of the FRP composites from the concrete surface. One effective method for delaying debonding and enhancing material usage is the use of pre-stressed FRP composites. This technique provides several benefits, such as increasing the overall capacity of the structure, enhancing cracking capacity, reducing strain in the longitudinal rebars, and etc. Recent research has demonstrated that grooving methods can effectively delay the debonding. Consequently, this study investigates the bond behavior between concrete and prestressed FRP sheets strengthened using grooving methods. The results from the lap shear-prestressed test revealed a substantial increase in performance when using the 5@15 groove class with 20% and 30% prestressing. In comparison to the reference specimen, there was an increase of 146% and 195%, respectively. This indicates that the utilization of prestressed FRP with grooving methods can significantly enhance bond capacity.
کلیدواژهها [English]
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