Central Peeling Failure Behavior of Polymer Cement Mortar Retrofitting of Reinforced Concrete Beams
Publication: Journal of Materials in Civil Engineering
Volume 17, Issue 2
Abstract
Polymer cement mortar (PCM) retrofitting is one of the largely used strengthening methods for repairing fatigue deteriorated highway bridge slabs in Japan. In this method, reinforcing bars are arranged underneath the lower surface of the slab and polymer cement mortar is sprayed onto them. Debonding of the PCM overlay is one of the major causes leading to failure of the repaired slabs. This paper mainly discusses this failure mechanism, its initiation, and suggests a method for quantitative analysis of the failure behavior. The stress transfer mechanism was measured using the strain distribution in the strengthening bars and a relationship for the bonding strength was obtained. Hence the relationship for the peeling load was obtained.
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References
Ishii, T., and Satoh, K. (1992). “Under repairing method of reinforced concrete slab of steel girder bridges using special polymer mortar.” Proc., JCI Symp. on Repair and Rehabilitation of Concrete Structures, Japan Concrete Institute, Kyoto, Japan, 77–84 (in Japanese).
Jansze, W. (1997). Strengthening of reinforced concrete members in bending by externally bonded steel plates—Design for beam shear and plate anchorage, Delft Univ. Press, Delft, The Netherlands.
Lee, L., Karbhari, V. M., and Sikorsky, C. (2003). “Comprehensive evaluation and monitoring of strengthening using FRP composites.” Proc., Int. Symp. on Latest Achievement of Technology and Research on Retrofitting Concrete Structures, Japan Concrete Institute, Kyoto, Japan, 9–16.
Matsui, S. (1986). “Fatigue durability and influence of water of RC slabs under moving vehicle.” Proc., Japan Concrete Institute, Vol. 9, No. 2, Japan Concrete Institute, Kyoto, Japan, 627–632 (in Japanese).
Matsui, S., and Maeda, Y. (1986). “A rational evaluation method for deterioration of highway bridge decks.” Proc., JSCE, No. 374/I-6, Japan Society of Civil Engineers, Japan, 419–426 (in Japanese).
Satoh, K., Hizukuri, M., Hida, K., and Hikichi, K. (2000). “Strengthening effect of strengthened RC slab of highway bridge using polymer cement mortar shot bottom side thickening method.” Proc., Japan Concrete Institute, Vol. 22, No. 1, Japan Concrete Institute, Kyoto, Japan, 517–522 (in Japanese).
Satoh, K., and Kodama, K. (1995). “A study on the underside strengthened reinforced concrete slab of bridge structures.” Proc., 5th Asia–Pacific Conf. on Structural Engineering and Construction, Brisbane, Australia, Vol. 3, 2005–2010.
Satoh, K., and Kodama, K. (1998). “A study on failure behavior and strengthened reinforcement stiffness of bottom thickness increasing method.” Proc., Japan Concrete Institute, Vol. 20, No. 1, Japan Concrete Institute, Kyoto, Japan, 563–568 (in Japanese).
Satoh, K., and Kodama, K. (2003). “Study on peeling behavior of bond interface of concrete members retrofitted by surface overlaying with polymer cement mortar.” Proc., JSCE, No. 732/V-59, Japan Society of Civil Engineers, Japan, 77–87 (in Japanese).
Sonoda, K., and Matsui, S. (1991). “Crack damage and the durability of the highway bridge RC slabs.” The Hanshin Road Public Corporation and a Hanshin Expressway Management Technical Center (in Japanese).
Takase, S. (2000). “A study on bond/durability behavior of repair and rehabilitation material.” Master's Thesis, Musashi Institute of Technology, Tokyo (in Japanese).
Tsuneoka, S., and Kakuta, S. (2002). “Bond behavior of bottom side increasing RC member using shot mortar.” Proc., Japan Concrete Institute, Vol. 24, No. 2, Japan Concrete Institute, Kyoto, Japan, 1573–1578 (in Japanese).
Worapatt, R., and Tsujii, Y. (2000). “RC slab strengthened by grid type CFRP and polymer cement mortar.” Proc., JSCE, Vol. 55, Japan Society of Civil Engineers, Japan.
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© 2005 ASCE.
History
Received: Jan 2, 2003
Accepted: Sep 20, 2004
Published online: Apr 1, 2005
Published in print: Apr 2005
Notes
Note. Associate Editor: Houssam A. Toutanji
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