Experimental and analytical investigations on debonding of hybrid FRPs for flexural strengthening of RC beams

被引：29
作者：
Choi, Eunsoo [1 ]
Utui, Nadia [2 ]
Kim, Hee Sun [2 ]
机构：
[1] Hongik Univ, Dept Civil Engn, Seoul 121791, South Korea
[2] Dept Architectural Engn, Seoul 120750, South Korea
来源：
COMPOSITES PART B-ENGINEERING | 2013年 / 45卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
Hybrid; Laminates; Debonding; Analytical modeling; Interfacial stress; REINFORCED-CONCRETE BEAMS; INTERFACIAL STRESSES; TO-CONCRETE; PLATE;
D O I：
10.1016/j.compositesb.2012.06.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents experimental and analytical studies aimed at investigating debonding of hybrid fiber reinforced polymers (FRPs) used to strengthen reinforced concrete (RC) beams. Towards this goal, an existing bending test method for small RC beams is modified to induce debonding failure and is adopted for reinforced concrete beams strengthened with one or two layers of carbon FRP (CFRP) or glass FRP (GFRP). From the experiments, strains on FRPs are measured and used to calculate interfacial stress between the concrete and FRP surfaces. Finite element (FE) models including debonding behavior in cohesive elements are generated to verify experimental results. Further, parametric studies are performed to predict the structural behaviors of RC beams strengthened with three layers of hybrid FRPs. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：248 / 256
页数：9
相关论文
共 23 条
[1]  
[Anonymous], 2010, ABAQUS THEOR MAN US
[2]  
[Anonymous], 2008, D303908 ASTM
[3]  
Aref AJ, 2007, COMPOS STRUCT, V157, P77
[4]   Experimental and nonlinear finite element studies of RC beams strengthened with FRP plates [J].
Camata, Guido ;
Spacone, Enrico ;
Zarnic, Roko .
COMPOSITES PART B-ENGINEERING, 2007, 38 (02) :277-288
[5]   Use of a single lap shear test to characterize composite-to-concrete or composite-to-steel bonded interfaces [J].
Chataigner, Sylvain ;
Caron, Jean-Francois ;
Benzarti, Karim ;
Quiertant, Marc ;
Aubagnac, Christophe .
CONSTRUCTION AND BUILDING MATERIALS, 2011, 25 (02) :468-478
[6]  
FIB, 2006, RETROFITTING CONCRET, V35
[7]   Small Beam Bond Test Method for CFRP Composites Applied to Concrete [J].
Gartner, Amber ;
Douglas, Elliot P. ;
Dolan, Charles W. ;
Hamilton, H. R. .
JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2011, 15 (01) :52-61
[8]   Performance of reinforced concrete beams strengthened by hybrid FRP laminates [J].
Hosny, Abdelhady ;
Shaheen, Hamdy ;
Abdelrahman, Amr ;
Elafandy, Tamer .
CEMENT & CONCRETE COMPOSITES, 2006, 28 (10) :906-913
[9]  
Kamel A., 2004, Emirates Journal for Engineering Research, V9, P77
[10]   Flexural behavior of reinforced concrete (RC) beams retrofitted with hybrid fiber reinforced polymers (FRPs) under sustaining loads [J].
Kim, Hee Sun ;
Shin, Yeong Soo .
COMPOSITE STRUCTURES, 2011, 93 (02) :802-811
123