Experimental Study of Strengthening for Increased Shear Bearing Capacity
This article is a reply.
VIEW THE ORIGINAL ARTICLEThis article has a reply.
VIEW THE REPLYPublication: Journal of Composites for Construction
Volume 9, Issue 6
Abstract
The need for structural rehabilitation of concrete structures all over the world is well known, and a great amount of research is going on in this field. The use of carbon fiber-reinforced polymer (CFRP) plate bonding has been shown to be a competitive method with regard to both structural performance and economic factors. This method consists of bonding a thin carbon-fiber laminate or sheet to the surface of the structure to act as an outer reinforcement layer. However, most research in this area has been undertaken to study flexural behavior. This paper deals with shear strengthening of reinforced concrete members by use of CFRP. Tests on rectangular beams 3.5 to 4.5 m long have been undertaken to study different parameters, such as fatigue, anchorage, and others. The strain field in shear spans of beams simultaneously subjected to shear and bending is also studied. The tests presented also contribute to the existing literature on tests of concrete members strengthened for increased shear capacity.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
Lars-Erik Lundbergs Foundation, The Swedish Building and Development Fund, J Gust Richert Foundation, and Skanska AB have provided financial support. For help with the laboratory tests, special attention should be given to Håkan Johansson, Lars Åström, and Georg Danielsson at Testlab, Luleå University of Technology. The assistance of Professor Lennart Elfgren is also greatly appreciated. Last but not least, the students Abderahim Aboudrar, Anders Johansson, Peter Mattsson, Jon Rödsätre, and Andy Hägglund should be thanked for their energy and collaboration skills during the laboratory work.
References
Al-Sulaimani, G. J., Sharif, A., Basunbul, I. A., Baluch, M. H., and Ghaleb, B. N. (1994). “Shear repair for reinforced concrete by fiberglass plate bonding.” ACI Struct. J., 91(4), 458–464.
Breña, S., Bramblett, R., Wood, S., and Kreger, M. (2003). “Increasing flexural capacity of reinforced concrete beams using carbon fiber-reinforced polymer composites,” ACI Special Publication, 215, 36–46.
Burgoyne, C. J. (1999). “Advanced composites in civil engineering in Europe.” Struct. Eng. Int. (IABSE, Zurich, Switzerland) 9(4), 267–273.
Carolin, A. (2001). “Strengthening of concrete structures with CFRP: Shear strengthening and full-scale applications.” Licentiate thesis, Luleå Univ. of Technology, Division of Structural Engineering, Luleå, Sweden.
Carolin, A., and Täljsten, B. (2005). “Theoretical study on strengthening for increased shear capacity.” J. Compos. Constr., 9(6).
Chen, J. F., and Teng, J. G. (2003). “Shear capacity of FRP-strengthened RC beams: FRP debonding.” Constr. Build. Mater., 17(1), 27–41.
Collins, F., and Roper, H. (1990). “Laboratory investigation of shear repair of reinforced concrete beams loaded in flexure.” ACI Mater. J., 97(2), 149–159.
Diagana, C., Li, A., Gedalia, B., and Delmas, Y. (2003). “Shear strengthening effectiveness with CFF strips.” Eng. Struct., 25(4), 507–516.
Micelli, F., Annaiah, R., and Nanni, A. (2002). “Strengthening of short shear span reinforced concrete T joists with fiber-reinforced plastic composites.” J. Compos. Constr., 6(4), 264–271.
Pellegrino, C., and Modena, C. (2002). “Fiber-reinforced polymer shear strengthening of reinforced concrete beams with transverse steel reinforcement.” J. Compos. Constr., 6(2), 104–111.
Täljsten, B. (1994). “Plate bonding, strengthening of existing concrete structures with epoxy bonded plates of steel or fibre reinforced plastics.” PhD thesis, 1994:152 D, Luleå Univ. of Technology, Luleå, Sweden.
Täljsten, B. (2002): FRP strengthening of existing concrete structures: Design guidelines, Luleå Univ. of Technology, Luleå, Sweden.
Triantafillou, T. C. (1998). “Shear strengthening of reinforced concrete beams using epoxy-bonded FRP composites.” ACI Struct. J., 95(2), 107–115.
Wong, R., and Vecchio, F. (2003). “Towards modeling of reinforced concrete members with externally bonded fiber-reinforced polymer composites.” ACI Struct. J., 100(1), 47–55.
Information & Authors
Information
Published In
Copyright
© 2005 ASCE.
History
Received: May 14, 2003
Accepted: Mar 7, 2005
Published online: Dec 1, 2005
Published in print: Dec 2005
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.