Experimental Study on Cracking Load and Ultimate Load of Masonry Walls with Window Openings Strengthened with Sprayed GFRP

Abstract:

A contrast investigation of the seismic behavior of unreinforced masonry walls with window openings strengthened with Carbon Fiber Reinforced Polymer (CFRP) sheets and sprayed Glass Fiber Reinforced Polymer (GFRP) is presented. Three wall specimens in the scale of 1/2 were tested by the horizontal cyclic loading combined with constant gravity loads. The seismic strengthening effects by two different FRP retrofitting schemes are compared in aspect of the failure modes, shear capacity, hysteresis response, deterioration of rigidity and ability of energy dissipation. The experimental results indicate that the increasing degree of shear capacity and the improvement of seismic behavior of the SGFRP-strengthened wall are significantly superior to that of the wall strengthened with epoxy-based CFRP; and the overcoat of sprayed GFRP can bond tightly and work well together with the masonry to play a critical role in earthquake resistance.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 1357-1360
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.1357
• Online since: July 2014
• Authors: Cheng Fang Sun, Xiao Yan Zhang, Qian Gu
• Keywords: CFRP Sheet, Masonry Wall with Window Opening, Seismic Strengthening, Sprayed GFRP, The Cracking Load, Ultimate Load

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