000010500 001__ 10500
000010500 005__ 20141205155733.0
000010500 04107 $$aeng
000010500 046__ $$k2008-10-12
000010500 100__ $$aKhaloo, Ali.R
000010500 24500 $$aExperimental Study of the Internal and External (FRP) Confinement Effect on Performance of Compressive Concrete Members

000010500 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010500 260__ $$b
000010500 506__ $$arestricted
000010500 520__ $$2eng$$aIn this study, using an experimental study, it is desired to investigate the direct effect of external confinement (FRP) in presence of internal confinement and to determine some criteria in retrofitting and seismic strengthening design of existing structures and new constructions. Limited related report is presented in the literature so far. In this research, 12×40 cm cylindrical concrete specimens are tested under compression by universal testing machine with capability of strain controlled loading. Test Variables include compressive strength of concrete (30 & 50 MPa), type of FRP (CFRP & GFRP) and number of FRP layers (1 and 2), and spiral bar spacing in internal confinement (3 and 5 cm). Some specimens are used as control with no FRP jacketing and spiral confinement, some are strengthened with CFRP or GFRP, some have just spiral confinement, and finally some have both FRP strengthening and spiral confinements. Complete σ-ε curves are obtained from extensive test parameters indicate an increase in the strength and ductility in the confined case with either internal or external confinement. For high level of external confinement, the level of internal confinement has limited influence. Finally based on experimental data a new model is proposed to predict the performance of confined concrete.

000010500 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010500 653__ $$aStrengthening, FRP, Spiral bars, Confined concrete, Model

000010500 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010500 720__ $$aKhaloo, Ali.R$$iJavid, Yousef$$iTazarv, Mostafa
000010500 8560_ $$ffischerc@itam.cas.cz
000010500 8564_ $$s176952$$uhttps://invenio.itam.cas.cz/record/10500/files/12-01-0037.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-01-0037.
000010500 962__ $$r9324
000010500 980__ $$aPAPER