Hybrid Effects of Carbon-Glass FRP Sheets in Combination with or without Concrete Beams

被引：18
|
作者：
Kang, Thomas H. -K. [1 ]
Kim, Woosuk [2 ]
Ha, Sang-Su [3 ]
Choi, Dong-Uk [4 ]
机构：
[1] Seoul Natl Univ, Dept Architecture & Architectural Engn, Seoul 155744, South Korea
[2] Kumoh Natl Inst Technol, Dept Architectural Engn, Gumi 730701, South Korea
[3] Kangnam Univ, Dept Architectural Engn, Yongin 446702, South Korea
[4] Hankyong Natl Univ, Dept Architectural Engn, Anseong 456749, South Korea
来源：
INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS | 2014年 / 8卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
carbon fibers; glass fibers; hybrid effects; fiber reinforced polymers; concrete; pseudo-ductility; FIBER COMPOSITES; TENSILE-STRENGTH;
D O I：
10.1007/s40069-013-0061-0
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The use of carbon fibers (CF) and glass fibers (GF) were combined to strengthen concrete flexural members. In this study, data of tensile tests of 94 hybrid carbon-glass FRP sheets and 47 carbon and GF rovings or sheets were thoroughly investigated in terms of tensile behavior. Based on comparisons between the rule of mixtures and test data, positive hybrid effects were identified for various (GF/CF) ratios. Unlike the rule of mixtures, the hybrid sheets with relatively low (GF/CF) ratios also produced pseudo-ductility. From the calibrated results obtained from experiments, a new analytical model for the stress-strain relationship of hybrid FRP sheets was proposed. Finally, the hybrid effects were verified by structural tests of concrete members strengthened with hybrid FRP sheets and either carbon or glass FRP sheets.
引用
收藏
页码：27 / 41
页数：15
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