Durability Assessment of FRP Bars Extracted from Existing FRP Bridge Structures Exposed to Field Conditions


Since the late 1990's there have been a number of bridges in the United States that have been built or rehabilitated using FRP materials. A number of these projects occurred within the state of Missouri between 1999 and 2012. To assess durability behavior of existing bridges, some samples with reinforcing bar including GFRP bars are extracted from several older FRP bridges like Southview Bridge in varying climates to examine their performance after a decade or more under field conditions. This paper presents several analytical methods like Short Bar Shear (SBS) test, Glass Transition Temperature (Tg) test, and Resin Content Measurement [Burn off testing (i.e. resin)] for FRP rebars, and PH Measurement for concrete to evaluate the both physical and chemical properties of GFRP bars and concrete with time under field environmental conditions. This paper is intended to provide a possible path forward to collect important field data on FRP reinforced structures with a view to create a database of field data to better understand the long-term behavior of FRP bars used in the field.

Meeting Name

8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016 (2016: Dec. 14-16, Hong Kong)


Civil, Architectural and Environmental Engineering

Keywords and Phrases

Antimony; Bridge decks; Chemical analysis; Durability; Fiber reinforced plastics; Glass transition; pH; Reinforced concrete; Reinforced plastics; Reinforcement; Resins; Analytical method; Bridge structures; Durability assessment; Environmental conditions; Long-term behavior; PH measurements; Physical and chemical properties; Reinforced structures; Electric measuring bridges; Burn off testing; FRP; SBS; Tg

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


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© 2016 The Hong Kong Polytechnic University. Department of Civil and Environmental Engineering and Research Institute for Sustainable Urban Development, All rights reserved.

Publication Date

01 Dec 2016

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