Fatigue Response of Concrete Decks Reinforced with FRP Rebars
Publication: Journal of Structural Engineering
Volume 124, Issue 1
Abstract
The fatigue response of concrete decks reinforced with fiber-reinforced plastic (FRP) bars is critical to the long-term endurance of this type of innovative structure. To evaluate the degradation of FRP reinforced bridge decks, fatigue tests were conducted on four concrete deck steel stringers. An initial stress range of 2.27 MPa (0.33 ksi) (tension) in the main FRP reinforcement, 3.1 MPa (0.45 ksi) (compressive) in the concrete deck top, and 24.8 MPa (3.6 ksi) (tension) at the bottom flange of a steel stringer was applied for all specimens. The stringer stiffness, composite versus noncomposite casting, and transverse posttensioning using high-strength Dywidag steel rods were varied during this research. The fatigue test results showed no loss of bond between FRP rebars and concrete in any of the test specimens. The major crack patterns were in the direction parallel to the stringers, i.e., flexural cracks in the concrete deck spanning the steel stringers. Effective central deck deflections could be set as a measure of global deck degradation during fatigue, and this rate of degradation in decks reinforced with FRP rebars was found comparable to decks reinforced with steel rebars.
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References
1.
Batchelor, B. deV, and Hewitt, B. E. (1976). “Are composite bridge slabs too conservatively designed?”Fatigue studies, ACI SP-41, Am. Concrete Inst. (ACI), Detroit, Mich.
2.
“Building code requirements for reinforced concrete.” (1989). ACI 318-89, Am. Concrete Inst., Detroit, Mich.
3.
Faza, S. S., and GangaRao, H. V. S. (1991). “Behavior of fiber reinforced plastic rebar under bending.”Structural congress abstracts, S. L. Iyer, ed., ASCE, New York, N.Y., 262.
4.
Faza, S. S., GangaRao, H. V. S., and Dalal, N. (1996). “Behavior of bridge decks reinforced with FRP bars and NMR characterization.”Fiber reinforced plastics for bridge decks; WVDOH—RP83, West Virginia Department of Transportation—Division of Highways, Charleston, W. Va.
5.
Franke, L. (1981). “Behavior and design of high-quality glass-fiber composite rods as reinforcement for prestressed concrete members.”Proc., Int. Symp., CP/Ricem/iBk.
6.
Hawkins, N. M. (1974). “Fatigue strength of concrete slabs reinforced with wire fabric.”Proc., Abeles Symp. on Fatigue of Concrete, ACI SP-41, Am. Concrete Inst. (ACI), Detroit, Mich.
7.
Hwan, B.(1986). “Fatigue analysis of plain concrete in flexure.”J. Struct. Engrg., ASCE, 112(2), 273–288.
8.
Keiichiro, S., Horikawa, T., and Kobayashi, H. (1986). “Fatigue failure mechanism of bridge deck RC slabs.”Proc., 1st Asian Conf. on Struct. Engrg. and Constr., Pergamon Press, New York, N.Y.
9.
Kumar, S. V. (1994). “Fatigue behavior of concrete decks reinforced with FRP bars,” MS thesis, West Virginia Univ., Morgantown, W.V.
10.
Kumar, S. V., and GangaRao, H. V. S. (1995). “Design and fatigue response of concrete bridge decks reinforced with FRP rebars.” Non-metallic (FRP) reinforcement for concrete structures, L. Taerwe, ed., RILEM, E & FN SPON, Paris, France.
11.
Kumar, S. V., Faza, S. S., and GangaRao, H. V. S. (1995). “Fatigue behavior of FRP reinforced concrete bridge decks and steel stringers.”Fiber reinforced concrete—modern developments, N. Banthia, and S. Mindess, eds., Dept. of Civil Engrg., Univ. of British Columbia, Vancouver, British Columbia, 407–417.
12.
Kumar, S. V., GangaRao, H. V. S., Faza, S. S., and Allison, R. W.(1995). “Experimental behavior of concrete decks reinforced with reinforced plastic (RP) rebars.”J. Reinforced Plastics and Compos., 14(9), 910–922.
13.
Nawy, E. G., and Neuwerth, G. E.(1977). “Fiber glass reinforced concrete slabs and beams.”J. Struct. Div., ASCE, 107(2), 421–440.
14.
Nawy, E. G., Neuwerth, G. E., and Phillips, C. J.(1971). “Behavior of fiber glass reinforced concrete beams.”J. Struct. Div., ASCE, 97(9), 2203–2215.
15.
Standards specifications for highway bridges, 13th Ed. (1983). Am. Assn. of State Hwy. and Transp. Officials (AASHTO), Washington, D.C.
Information & Authors
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Published In
Journal of Structural Engineering
Volume 124 • Issue 1 • January 1998
Pages: 11 - 16
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Jan 1, 1998
Published in print: Jan 1998
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