Title: Effectiveness of FRP materials with alternative concrete removal strategies for reinforced concrete bridge column wrapping

Authors: Sreenivas Alampalli

Addresses: Bridge Program and Evaluation Services Bureau, NYS Department of Transportation, 50 Wolf Road, POD 43, NY 12232, Albany, USA

Abstract: Bridge owners are increasingly attracted to fibre reinforced polymer (FRP) composite materials for bridge repair and rehabilitation as a cost-effective means for extending service life of bridge components. Major bridge applications for these materials include bridge decks, concrete strengthening, and column wrapping. The New York State Department of Transportation (NYSDOT) has been one of the leading states in using FRP materials for these applications, mostly on an experimental basis. Realising that data on durability of structural components retrofitted with these materials are unavailable and there is a lack of standards for design and installation, NYSDOT has been monitoring several of these applications. FRP wrapping was used, in several applications, to extend the service life of concrete bridge columns by sealing the concrete surface and confining future delaminations. This paper reports on a research study, which evaluated alternative concrete removal strategies with one layer of FRP wrapping.

Keywords: bridge rehabilitation; monitoring; FRP durability; bridge column repairs; corrosion repair; concrete structures; concrete repair; concrete bridges; fibre reinforced polymer wraps; service life; FRP wrapping.

DOI: 10.1504/IJMPT.2005.007734

International Journal of Materials and Product Technology, 2005 Vol.23 No.3/4, pp.338 - 347

Published online: 07 Sep 2005 *

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