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首页> 外文期刊>Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section >Structural Response of Reinforced Concrete Beams Strengthened in Flexure with Near Surface Mounted Fibre Reinforced Polymer Composite Strips. Experimental Results
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Structural Response of Reinforced Concrete Beams Strengthened in Flexure with Near Surface Mounted Fibre Reinforced Polymer Composite Strips. Experimental Results

机译：近表面安装的纤维增强聚合物复合材料带的抗弯钢筋混凝土梁的结构响应。实验结果

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摘要

This paper presents the results obtained from a series of tests performed on reinforced concrete (RC) beams strengthened in flexure with near surface mounted (NSM) carbon fibre reinforced polymer (CFRP) composite strips. In order to determine the overall stiffness and flexural capacity of the strengthened specimens, four-point bending tests were carried out under monotonic loading. For the beam strengthened with two CFRP strips, with the cross section of 1.2 × 18 mm, an increase in the load carrying capacity of 164% and a reduction o f the deflection up to 12% was achieved, in comparison with the reference beam. For the specimens strengthened with three CFRP strips, with the cross section of 1.2 × 12 mm and 1.2 × 24 mm, an increase of the bearing capacity of 158% and 202% is obtained, in comparison with the control specimen. Failure mode for all the tested beams occurred by debonding in the form of concrete cover separation (CCS).
机译：本文介绍了通过对使用近表面安装（NSM）碳纤维增强聚合物（CFRP）复合带材进行抗弯加固的钢筋混凝土（RC）梁进行的一系列测试获得的结果。为了确定加强试样的整体刚度和抗弯能力，在单调载荷下进行了四点弯曲试验。与参考梁相比，对于用两个CFRP筋条加固的截面为1.2×18 mm的梁，其承载能力提高了164％，挠度降低了12％。对于用三个CFRP筋条加固的横截面分别为1.2×12 mm和1.2×24 mm的试样，与对照试样相比，其承载力增加了158％和202％。所有测试梁的破坏模式都是通过混凝土粘结层分离（CCS）的剥离方式发生的。

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