Bond between FRP and concrete in reinforced concrete beams strengthened with near surface mounted and externally bonded reinforcement

被引：45
|
作者：
Kotynia, Renata [1 ]
机构：
[1] Tech Univ Lodz, Dept Concrete Struct, PL-90924 Lodz, Poland
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 32卷
关键词：
Carbon fibre reinforced polymer strips; Concrete; Beams; Flexure; Strengthening; Near surface mounted reinforcement; Externally bonded; Bond; ANCHORAGE LENGTH; POLYMER RODS;
D O I：
10.1016/j.conbuildmat.2010.11.104
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The paper concerns bond behaviour between composite carbon fibre reinforced polymer (CFRP) materials and concrete in externally bonded (EB) and near surface mounted (NSM) FRP strengthened reinforced concrete (RC) beams. Bond mechanism was investigated on the modified RILEM beam bond test in aspect of six parameters: beam's span and depth, longitudinal steel reinforcement, type of the CFRP strips/sheets, CFRP bond length, and compressive concrete strength. The influence of the existing steel reinforcement on the FRP-to-concrete bond conditions was investigated in the beams with continuous longitudinal steel bars and in the beams with cut longitudinal reinforcement at the mid-span. The test confirmed a crucial rule of the internal steel bars on the FRP-to-concrete bond and failure modes. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：41 / 54
页数：14
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