Field durability study of vinyl-ester-based GFRP rebars in concrete bridge barriers

Benmokrane, Brahim and Nazair, Claude and Loranger, Marc-Antoine and Manalo, Allan (2018) Field durability study of vinyl-ester-based GFRP rebars in concrete bridge barriers. Journal of Bridge Engineering, 23 (12 - Article 0401809). pp. 1-13. ISSN 1084-0702

Abstract

Val-Alain Bridge on Highway 20 East is the first bridge in Canada in which the concrete deck and barrier walls were fully reinforced with vinyl-ester-based glass-fiber-reinforced-polymer (GFRP) bars. Built in 2004, this bridge was considered as the prototype for bridges built thereafter by the Quebec Ministry of Transport (MTQ). In 2015, concrete core samples containing GFRP bars were taken from the bridge barrier wall to assess the durability of the high-performance concrete and bars. The mechanical and physicochemical properties of the concrete and GFRP bars were assessed and compared with the material properties measured during bridge construction. In addition, the durability of the GFRP bars was assessed based on performance of the reference samples from the same production lot of the bars used in reinforcing the Val-Alain Bridge. The results reveal no significant changes in the physicochemical properties as well as microstructure of the concrete and vinyl-ester-based GFRP bars sampled from the bridge barriers after 11 years of service exposure to wet–dry cycles, freeze–thaw cycles, and deicing salts.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials
Date Deposited: 11 Oct 2018 02:14
Last Modified: 07 Jan 2019 02:56
Uncontrolled Keywords: GFRP reinforcing bars; vinyl-ester; durability; in-service; concrete bridge barriers; physicochemical properties; microstructure
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1061/(ASCE)BE.1943-5592.0001315
URI: http://eprints.usq.edu.au/id/eprint/34891

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