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http://dx.doi.org/10.12989/sem.2011.38.4.459

Flexural behavior of concrete beams reinforced with aramid fiber reinforced polymer (AFRP) bars  

Kim, Min Sook (Department of Architectural Engineering, Kyung Hee University)
Lee, Young Hak (Department of Architectural Engineering, Kyung Hee University)
Kim, Heecheul (Department of Architectural Engineering, Kyung Hee University)
Scanlon, Andrew (Department of Civil Engineering, The Pennsylvania State University)
Lee, Junbok (Department of Architectural Engineering, Kyung Hee University)
Publication Information
Structural Engineering and Mechanics / v.38, no.4, 2011 , pp. 459-477 More about this Journal
Abstract
Due to the low elastic modulus of FRP, concrete members reinforced with FRP rebars show greater deflections than members reinforced with steel rebars. Deflection is one of the important factors to consider the serviceability of horizontal members. In this study flexural test of AFRP reinforced concrete beams was performed considering reinforcement ratio and compressive strength as parameters. The test results indicated that flexural capacity and stiffness increase in proportion to the reinforcement ratio. The test results were compared with existing proposed equations for the effective moment of inertia including ACI 440. The most of the proposed equations were found to over-estimate the effective moment of inertia while the equation proposed by Bischoff and Scanlon (2007) most accurately predicted the values obtained through actual testing.
Keywords
AFRP rebar; beam; reinforcement ratio; concrete compressive strength; deflection; effective moment of inertia; serviceability;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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1 ACI Committee 318 (2005), Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (318R-05), American Concrete Institute, Farmington Hills, Mich.
2 ACI Committee 440 (2006), Guide for the Design and Construction of Concrete Reinforced with FRP Bars (ACI 440.1R-06), American Concrete Institute, Farmington Hills, Mich.
3 ACI Committee 435 (1995), Control of Deflection in Concrete Structures (ACI 435R-95), American Concrete Institute, Farmington Hills, Mich.
4 Benmokrane, B., Chaallal, O. and Masmoudi, R. (1996), "Flexural response of concrete beams reinforced with FRP reinforcing bars", ACI Mater. J., 91(2), 46-55.
5 Bischoff, P.H. (2007), "Deflection calculation of FRP reinforced concrete beams based on modifications to the existing Branson equation", J. Compos. Constr., 11(1), 4-14.   DOI   ScienceOn
6 Bischoff, P.H. and Scanlon, A. (2007), "Effective moment of inertia for calculating deflections of concrete members containing steel reinforcement and fiber-reinforced polymer reinforcement", ACI Struct. J., 104(1), 68-75.
7 Branson, D.E. (1965), Instantaneous and Time-dependent Deflections of Simple and Continuous Reinforced Concrete Beams, Alabama Highway Research Report, Report No. 7, Part 1.
8 Lu, W.Y., Hwang, S.J. and Lin, I.J. (2010), "Deflection prediction for reinforced concrete deep beams", Comput. Concrete, 7(1), 1-16.   DOI
9 Nayal, R. and Rasheed, H.A. (2006), "Tension stiffening model for concrete beams reinforced with steel and FRP bars", J. Mater. Civil Eng., 18(6), 831-841.   DOI   ScienceOn
10 Rafi, M.M., Nadjai, A., Ali, F. and Talamona, D. (2008), "Aspects of behavior of CFRP reinforced concrete beams in bending", Constr. Buil. Mater., 22, 277-285.   DOI   ScienceOn
11 Sarkar, P., Govind, M. and Menon, D. (2009), "Estimation of short-term deflection in two-way RC slab", Struct. Eng. Mech., 31(2), 237-240.   DOI
12 Scanlon, A. and Bischoff, P.H. (2008), "Shrinkage restraint and loading history effects of deflections of flexural members", ACI Struct. J., 105(4), 498-506.
13 Toutanji, H.A. and Saafi, M. (2000), "Flexural behavior of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars", ACI Struct. J., 97(5), 712-719.
14 Zanuy, C. (2010), "Investigating the negative tension stiffening effect of reinforced concrete", Struct. Eng. Mech., 34(2), 189-211.   DOI
15 Yost, J.R., Gross, S.P. and Dinehart, D.W. (2003), "Effective moment of inertia for glass fiber-reinforced polymer-reinforced concrete beams", ACI Struct. J., 100(6), 732-739.