Experimental And Analytical Studies Have Increased Dramatically On The Monotonic Axial Behavior Of Frp

1284 Words Feb 28th, 2015 6 Pages
Introduction 1: Over the past quarter century, the number of both experimental and analytical studies have increased dramatically on the monotonic axial behavior of FRP-confined concrete columns, and as a result, many uniaxial stress-strain models have been generally developed; however, most of these studies have focused largely on FRP-confined circular plain (unreinforced) concrete cylinders numerous authors tested (e.g., Mirmiran and Shahawy 1997;Mirmiran et al.1998; Xiao and Wu 2000; Lam and Teng 2002,2003;Berthet et al.2005;Almusallam 2007; Benzaid et al.2008;Eid and Paultre 2007,2008;Teng et al. 2009;Smith et al. 2010;Cui et al.2010). Relatively few of which have included small or medium scale noncircular unreinforced specimens (e.g., Rochette and Labossiere 2000; Ilki and Kumbasar 2002; Youssef 2003;Rousakis et al.2007; Youssef et al. 2007; Benzaid et al.2008;Wu and Wei 2010; Wu and Zhou 2010; Benzaid and Mesbah 2013).Owing to the limited progress on the experimental investigations carried out to date on FRP-confined rectangular concrete columns tested under cyclic axial compression loading , three essential issues requiring further research are evident, namely the influence of (1) cross sectional aspect ratio, (2) internal hoop and longitudinal steel reinforcement, and (3) cyclic loading. These issues, which form the basis of the experimental study on CFRP-confined rectangular reinforced concrete columns reported in this paper, are introduced as follows:
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