Durability Gap Analysis for Fiber-Reinforced Polymer Composites in Civil Infrastructure

TLDR

The durability of FRP composites in civil infrastructure lacks a comprehensive, validated database, hindering acceptance by designers, especially since load‑bearing structures are expected to last long without inspection. The study aims to identify and prioritize critical gaps in durability data for FRP composites in civil infrastructure. The analysis examines FRP applications in internal reinforcement, external strengthening, seismic retrofit, bridge decks, structural profiles, and panels across environments such as moisture, alkalinity, creep, fatigue, fire, thermal cycles, and UV exposure.

Abstract

The lack of a comprehensive, validated, and easily accessible data base for the durability of fiber-reinforced polymer (FRP) composites as related to civil infrastructure applications has been identified as a critical barrier to widespread acceptance of these materials by structural designers and civil engineers. This concern is emphasized since the structures of interest are primarily load bearing and are expected to remain in service over extended periods of time without significant inspection or maintenance. This paper presents a synopsis of a gap analysis study undertaken under the aegis of the Civil Engineering Research Foundation and the Federal Highway Administration to identify and prioritize critical gaps in durability data. The study focuses on the use of FRP in internal reinforcement, external strengthening, seismic retrofit, bridge decks, structural profiles, and panels. Environments of interest are moisture/solution, alkalinity, creep/relaxation, fatigue, fire, thermal effects (including freeze-thaw), and ultraviolet exposure.