Enhancing FRP-to-concrete bond behavior by epoxy ribs

Cheng Jiang, Baolin Wan, John Omboko

Research output: Chapter in Book / Conference PaperConference Paperpeer-review

Abstract

![CDATA[The bond between external bonding (EB) of fiber reinforced polymer (FRP) composite materials to concrete is the weakest link in the strengthened concrete flexural members. There are three mechanisms to transfer the interfacial shear between FRP and the concrete substrate, i.e., adhesion, interlocking and friction. This paper proposes a new approach by grooving on the concrete surface before applying epoxy to make epoxy ribs to increase interlocking. An experimental program was conducted to verify the effectiveness of the proposed epoxy ribs. Six grooves perpendicular to the fiber direction were cut on the bonding surface of the concrete blocks. The grooves were filled by wax in the unfilled specimens and with epoxy primer in the epoxy filled specimens before CFRP plate was installed. The experimental results show that epoxy-filled grooves can significantly improve the bond between FRP and concrete.]]
Original languageEnglish
Title of host publicationThe 13th International Symposium of Fiber-Reinforced Polymer Reinforcement for Concrete Structures, The Concrete Convention and Exposition, October 15-19, 2017, Anaheim, CA, USA
PublisherAmerican Concrete Institute
Pages401-413
Number of pages13
ISBN (Print)9781641950466
Publication statusPublished - 2018
EventInternational Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures -
Duration: 15 Oct 2017 → …

Publication series

Name
ISSN (Print)0193-2527

Conference

ConferenceInternational Symposium on Fiber-Reinforced Polymer Reinforcement for Concrete Structures
Period15/10/17 → …

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