Confinement of Damaged and Nondamaged Structural Concrete with FRP and TRC Sleeves
Publication: Journal of Composites for Construction
Volume 11, Issue 5
Abstract
The potential for using textiles impregnated with cement as a means for in situ strengthening and retrofit of structural concrete was explored and compared with the conventional epoxy method. Fabrics of different geometries, yarns, and modulus values were evaluated. Simulation of repair and strengthening was carried out by wrapping fabric impregnated with cement and epoxy around damaged and undamaged concrete cylinders. The cylinders with the impregnated sleeves were loaded in compression, and their performance was compared with that of the “virgin” (control) concrete. In addition, the mechanical properties of the cement composite layer were evaluated, as well as the stiffness of the fabrics themselves, and correlated with that of the repaired system. Efficient repair with the cement binder was accomplished with the high modulus fabric (Kevlar) in particular. However, even the lower modulus (polypropylene) could be effective in repairing and inducing some postpeak resistance (although to a smaller extent than with the Kevlar). Improved behavior was also obtained with the nondamaged concrete cylinder when it was strengthened with the cement–fabric jacket, mainly at composite strain values of up to 0.2–0.3%.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The writer gratefully acknowledges the National Building Research Institute, Technion-Israel Institute of Technology, for the help with testing and the experimental program.
References
Brameshuber, W., Brockmann, J., and Roessler, G. (2001). “Textile reinforced concrete for formwork elements—Investigations of structural behaviour.” Proc., FRPRCS-5 Fiber Reinforced Plastics for Reinforced Concrete Structures, Thomas Telford, London, Vol. 2, 1019–1026.
Curbach, M., and Brueckner, A. (2003). “Textile strukturen zur querkraftverstaerkung von stahlbetonbauteilen.” Proc., 2nd Colloquium on Textile Reinforced Structures, Dresden, Germany, 347–360 (in German).
Curbach, M., and Ortlepp, R. (2003). “Besonderheiten des verbundverhaltens von verstaerkungsschichten aus textilbewehrtem.” Proc., 2nd Colloquium on Textile Reinforced Structures, Dresden, Germany, 361–374 (in German).
Häußler-Combe, U., Jesse, F., and Curbach, M. (2004). “Textile reinforced composites—Overview, experimental, and theoretical investigations.” Proc., 5th Int. Conf. on Fracture Mechanics of Concrete and Concrete Structures, Ia-FraMCos 204, Vail, Colo., 749–756.
Kruger, M., Ozbolt, J., and Reinhardt, H. W. (2003). “A new 3D discrete bond model to study the influence of bond on structural performance of thin reinforced and prestressed concrete plates.” Proc., High Performance Fiber Reinforced Cement Composites (HPFRCC4), RILEM, Ann Arbor, Mich., 49–63.
Meyer, C., and Vilkner, G. (2003). “Glass concrete thin sheets prestressed with aramid fiber mesh.” Proc., High Performance Fiber Reinforced Cement Composites (HPFRCC4), RILEM, Ann Arbor, Mich., 325–336.
Molter, M., Littwin, R., and Hegger, J. (2001). “Cracking and failure modes of textile reinforced concrete.” Proc., FRPRCS-5 Fiber Reinforced Plastics for Reinforced Concrete Structures, Thomas Telford, London, Vol. 2, 1009–1018.
Peled, A., and Bentur, A. (2000). “Geometrical characteristics and efficiency of textile fabrics for reinforcing composites.” Cem. Concr. Res., 30(5), 781–790.
Peled, A., Bentur, A., and Yankelevsky, D. (1999). “Flexural performance of cementitious composites reinforced with woven fabrics.” J. Mater. Civ. Eng., 11(4), 325–330.
Peled, A., and Mobasher, B. (2005). “Pultruded fabric-cement composites.” ACI Mater. J., 102(1), 15–23.
Sato, Y., Fujii, S., Seto, Y., and Fujii, T. (1999). “Structural behavior of composite reinforced concrete members encased by continuous fiber-mesh reinforced mortar permanent forms.” Proc., FRPRCS-4 Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures, SP-188, American Concrete Institute, Farmington Hills, Mich., 113–124.
Swamy, R. N., and Hussin, M. W. (1990). “Woven polypropylene fabrics—An alternative to asbestos of thin sheet application.” Textile composites in building construction, Part 1, Elsevier Applied Science, 57–67.
Teng, J. G., Chen, J. F., Smith, S. T., and Lam, L. (2001). FRP strengthened RC structures, Wiley, New York.
Wiberg, A. (2003). “Strengthening of concrete beams using cementitious carbon fibre composites.” Doctoral thesis, Royal Institute of Technology, Stockholm.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 11 • Issue 5 • October 2007
Pages: 514 - 522
Copyright
© 2007 ASCE.
History
Received: Oct 4, 2005
Accepted: Sep 29, 2006
Published online: Oct 1, 2007
Published in print: Oct 2007
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.