Title: Recovery of seismic resistance in corrosion-damaged reinforced concrete through FRP jacketing

Authors: S. Tastani, S.J. Pantazopoulou

Addresses: Department of Civil Engineering, Demokritus University of Thrace (DUTh), Xanthi 67100, Greece. ' Department of Civil Engineering, Demokritus University of Thrace (DUTh), Xanthi 67100, Greece

Abstract: Corrosion of steel reinforcement is a critical issue in assessment of exposed reinforced concrete (r.c.) structures because its harmful influence on stiffness, strength and ductility may drastically limit their service life. In assessing residual strength several parameters need be considered: loss of flexural strength due to bar section loss, bursting pressure due to rust build-up, loss of bond due to reduction of rib height and the coefficient of friction. This paper explores the behaviour of corroded r.c. members under flexure-shear (seismic effects). An analytical model was developed to describe the mechanical implications of corrosion. The efficacy of FRP jackets in slowing down corrosion and for strength recovery is considered. Experiments from international literature were used to correlate the proposed methods and to derive practical expressions for assessment and redesign.

Keywords: reinforcement corrosion; FRP jackets; FRP wrapping; FRP wrapping; rehabilitation; seismic upgrading; bond; corrosion repair; concrete structures; concrete repair; fibre reinforced polymer wraps; service life; residual strength; strength recovery.

DOI: 10.1504/IJMPT.2005.007737

International Journal of Materials and Product Technology, 2005 Vol.23 No.3/4, pp.389 - 415

Published online: 07 Sep 2005 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article