Effect of Environmental Aging on the Numerical Response of FRP-Strengthened Masonry Walls
Publication: Journal of Structural Engineering
Volume 142, Issue 1
Abstract
Recent durability studies have shown the susceptibility of bond in fiber-reinforced polymer (FRP) strengthened masonry components to hygrothermal exposures. However, it is not clear how this local material degradation affects the global behavior of FRP-strengthened masonry structures. This study addresses this issue by numerically investigating the nonlinear behavior of FRP-masonry walls after aging in two different environmental conditions. A numerical modeling strategy is adopted and validated with existing experimental tests on FRP-strengthened masonry panels. The model, once validated, is used for modeling of four hypothetical FRP-strengthened masonry walls with different boundary conditions, strengthening schemes, and reinforcement ratios. The nonlinear behavior of the walls is then simulated before and after aging in two different environmental conditions. The degradation data are taken from previous accelerated aging tests. The changes in the failure mode and nonlinear response of the walls after aging are presented and discussed.
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Acknowledgments
The first author acknowledges the financial support of the Portuguese Science Foundation [Fundação de Ciência Tecnologia (FCT)] through grants SFRH/BD/80697/2011 and SFRH/BPD/92614/2013.
References
Ascione, L., Feo, L., and Fraternali, F. (2005). “Load carrying capacity of 2D FRP/strengthened masonry structures.” Compos. Part B Eng., 36(8), 619–626.
Barnes, B. A. (1990). “Bond and low cycle fatigue behavior of thermoset composite reinforcing for the concrete industry.” M.Sc. thesis, Iowa State Univ., Ames, IA.
Carrara, P., Ferretti, D., and Freddi, F. (2013). “Debonding behavior of ancient masonry elements strengthened with CFRP sheets.” Compos. Part B Eng., 45(1), 800–810.
DIANA version 9.5 [Computer software]. (2014). TNO DIANA BV, Delft, Netherlands.
Failla, A., Cottone, A., and Gianbanco, G. (2005). “Numerical modeling of masonry structures reinforced by FRP plate/sheets.” Structural analysis of historical constructions, Taylor & Francis, London, 857–866.
Garbin, E., Panizza, M., and Valluzzi, M. R. (2010). “Experimental assessment of bond behaviour of fibre-reinforced polymers on brick masonry.” Struct. Eng. Intern., 20(4), 392–399.
Ghiassi, B., Marcari, G., Oliveira, D. V, and Lourenço, P. B. (2013). “Water degrading effects on the bond behavior in FRP-strengthened masonry.” Compos. Part B Eng., 54, 11–19.
Ghiassi, B., Marcari, G., Oliveira, D. V., and Lourenço, P. B. (2012). “Numerical analysis of bond behavior between masonry bricks and composite materials.” Eng. Struct., 43, 210–220.
Ghiassi, B., Oliveira, D. V., and Lourenço, P. B. (2014a). “Accelerated hygrothermal aging of bond in FRP–masonry systems.” J. Compos. Constr., 04014051.
Ghiassi, B., Silva, S. M., Oliveira, D. V., Lourenço, P. B., and Bragança, L. (2014b). “FRP-to-Masonry bond durability assessment with infrared thermography method.” J. Nondestruct. Eval., 33(3), 427–437.
Grande, E., Imbimbo, M., and Sacco, E. (2013). “Finite element analysis of masonry panels strengthened with FRPs.” Compos. Part B Eng., 45(1), 1296–1309.
Grande, E., Milani, G., and Sacco, E. (2008). “Modeling and analysis of FRP-strengthened masonry panels.” Eng. Struct., 30(7), 1842–1860.
Karantoni, F., and Fardis, M. (1992). “Effectiveness of seismic strengthening techniques for masonry buildings.” J. Struct. Eng., 1884–1902.
Lourenço, P. B. (1998). “Continuum model for masonry: Parameter estimation and validation.” J. Struct. Eng., 642–652.
Milani, G., and Lourenço, P. B. (2013). “Simple homogenized model for the nonlinear analysis of FRP-strengthened masonry structures. I: Theory.” J. Eng. Mech., 59–76.
Milani, G., Rotunno, T., Sacco, E., and Tralli, A. (2006). “Failure load of FRP strengthened masonry walls: Experimental results and numerical models.” Struct. Dyn. Health Monit., 2(1), 29–50.
Mosallam, A., and Banerjee, S. (2011). “Enhancement in in-plane shear capacity of unreinforced masonry (URM) walls strengthened with fiber reinforced polymer composites.” Compos. Part B Eng., 42(6), 1657–1670.
Sciolti, M. S., Aiello, M. A., and Frigione, M. (2012). “Influence of water on bond behavior between CFRP sheet and natural calcareous stones.” Compos. Part B Eng., 43(8), 3239–3250.
Soudki, K. A., and Green, M. F. (1997). “Freeze-thaw response of CFRP wrapped concrete.” ACI Conc. Int., 19(8), 64–67.
Tumialan, J., Galati, N., and Nanni, A. (2003). “Field assessment of unreinforced masonry walls strengthened with fiber reinforced polymer laminates.” J. Struct. Eng., 1047–1056.
Valluzzi, M. R., Tinazzi, D., and Modena, C. (2002). “Shear behavior of masonry panels strengthened by FRP laminates.” Constr. Build. Mater., 16(7), 409–416.
Verghese, K. N. E., Morrell, M. R., Horne, M. R., Lesko, J. J., and Haramis, J. (2000). “Freeze-thaw durability of polymer matrix composites in infrastructure.” Proc., 4th Recent Developments in Durability Analysis of Composite Systems, Balkema, Rotterdam, Netherlands, 11–14.
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© 2015 American Society of Civil Engineers.
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Received: Jun 24, 2014
Accepted: May 12, 2015
Published online: Jun 22, 2015
Discussion open until: Nov 22, 2015
Published in print: Jan 1, 2016
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