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Bond behavior of carbon laminate strips into concrete by pullout-bending tests

机译:碳层压板条通过拉拔弯曲试验与混凝土的粘结性能

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摘要

During the last years it has been investigated a reinforcing technique based on introducingcarbon laminate (CFRP) strips into saw cuts made on the concrete cover of the element to bestrengthened. The CFRP is fixed to concrete element using epoxy adhesive. Comparatively tothe techniques that glue the CFRP to the external surfaces of the concrete element, the oneproposed in the present work has the advantages of mobilize high percentage of the tensilestrength of this composite, prevent the peeling phenomenon and add an extra protectionagainst fire and vandalism acts. To characterize the bond behavior of the CFRP strips toconcrete, pullout-bending tests were carried out. The influence of the concrete strength andthe embedment length was analyzed in the experimental campaign. In the present work thetests performed are described and the results obtained are presented and discussed.
机译:在最近几年中,已经研究了一种加固技术,该技术基于将碳层压板(CFRP)条引入到锯齿形切口中,该锯齿形切割在元素的混凝土覆盖层上进行了最佳处理。 CFRP通过环氧树脂粘合剂固定在混凝土构件上。与将CFRP胶粘到混凝土构件外表面的技术相比,本工作提出的技术具有以下优点:可动员该复合材料的高百分比的拉伸强度,防止剥落现象并增加防火和防破坏作用。为了表征CFRP条混凝土的粘结性能,进行了拉拔弯曲试验。在实验中分析了混凝土强度和包埋长度的影响。在本工作中,描述了执行的测试,并介绍和讨论了获得的结果。

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