Splitting Bond Capacities of Concrete Element Reinforced with Continuous Fiber
Publication: Journal of Structural Engineering
Volume 131, Issue 11
Abstract
This paper presents an experimental work and prediction of bond capacities of longitudinal steel rebar for concrete element with the polyacetal fiber (PAF) including internal reinforcements and externally wrapped sheets for confinement, where the bond capacity means an average bond resistance over a length of embedment of the rebar. The objectives of this study are to clarify bond behavior and to evaluate the bond strength. The loading tests were performed on 22 cantilever type specimens that vary on the amount and the location in a cross section, such as stirrup (peripheral around rebars), subtie, and jacketing. The test results indicated that the maximum bond capacity could improve with PAF as internal and external reinforcements consist of filaments and sheets, respectively. Considering strain behavior of transverse reinforcements, the writers proposed a new predictable equation for internal reinforcements. On the other hand, a predictable equation for the PAF sheets was also derived from the efficiency coefficient of PAF sheets on shear capacity of the RC element, which was already proposed. Both the bond strengths of average and each rebar were predicted by respective proposed equations. The close approximations were obtained to experimental data for internal and external fiber reinforcements.
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Acknowledgments
The writers wish to acknowledge Dr. Toshiyuki Kanakubo of the Tsukuba Univ. for his furnishing details of test results reported early and Professor Bunzo Tsuji, Professor Fumio Watanabe, and Dr. Yuichi Sato of the Kyoto Univ. for their valuable advice. The writers are also grateful to Mr. Hideto Ando, Mr. Yuuri Akagi, and Mrs. Yukari Ishida who were students of the Kyoto Univ. for their assistance during the experimental program, to NETUREN for providing steel rebars, and to Mr. Yutaka Shibakawa of Shibakawa Structural Office for his technical support.
References
Architectural Institute of Japan (AIJ). (1990). Design guidelines for earthquake resistant reinforced concrete buildings based on ultimate strength concept, Tokyo.
Architectural Institute of Japan (AIJ). (1997). Design guidelines for earthquake resistant reinforced concrete buildings based on inelastic displacement concept, Tokyo.
Architectural Institute of Japan (AIJ). (2001). Design and construction guideline of continuous fiber reinforced concrete, Tokyo.
Fujii, S., and Morita, S. (1982). “Splitting bond capacities of deformed bars—Part 1 experimental studies on main factors influencing splitting bond failure.” Transactions of the Architectural Institute of Japan, No. 319, Architectural Institute of Japan, 47–55.
Fujii, S., and Morita, S. (1983). “Splitting bond capacities of deformed bars—Part 2 a proposed ultimate strength equation for splitting bond failure.” Transactions of the Architectural Institute of Japan, No. 324, Architectural Institute of Japan, 45–53.
Iihoshi, C., Fukuyama, H., Matsumoto, Y., and Abe, S. (1999a). “Strengthening effect of reinforced concrete elements with polyacetal fiber sheets.” Fourth Int. Symposium on Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures, SP-188, ACI, 659–669.
Iihoshi, C., Fukuyama, H., Matsumoto, Y., and Abe, S. (1999b). “Strengthening effect of RC elements by polyacetal fiber sheets.” Proc., Japan Concr. Inst., 21(3), 1471–1476.
Komatsu, T., Enoki, S., and Aoshima, A. (1991). “The effects of pressure on drawing polyoxymethylene.” Polymer, 32(11), 1994–1999.
Kono, S., Matsuno, K., and Kaku, T. (2000). “Bond-slip behavior of longitudinal bars confined with FRP sheets” Proc., 12th World Conf. on Earthquake Engineering (CD-ROM), Auckland, New Zealand.
Sonobe, Y., Fujisawa, M., Honda, T., Kanakubo, T., and Yonemaru, K. (1991). “Bond performance of concrete member reinforced with FRP bars (Part 3: Effect of fiber lateral reinforcement using cantilever specimens with longitudinal steel bars).” Proc., AIJ Annual Meeting, Structures II, Architectural Institute of Japan, 841–842.
Ueda, T., Ohashi, Y., Torii, Y., and Iihoshi, C. (1999). “Retrofit of con-crete column with a new type of continuous fiber sheet.” Conf. Proc., Civil and Environmental Engineering Conf., Volume 3 (Part II), Structural Engineering and Construction, IV19–IV26.
Ueda, T., and Sato, Y. (2002). “New approach for usage of continuous fiber as non-metallic reinforcement of concrete.” Struct. Eng. Int., 12(2), 111–116, International Assoc. Bridge and Structural Engineering.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 11 • November 2005
Pages: 1699 - 1711
Copyright
© 2005 ASCE.
History
Received: Jul 7, 2004
Accepted: Nov 19, 2004
Published online: Nov 1, 2005
Published in print: Nov 2005
Notes
Note. Associate Editor: Jin-Guang Teng
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