Effect of Environmental Exposure on the Mechanical and Bonding Properties of Hybrid FRP Reinforcing Bars for Concrete Structures

Hybrid fiber-reinforced polymer (FRP) rebar has emerged as one of the most promising and affordable solutions to the brittle failure problems of ordinary FRP rebar in concrete structures. Hybrid FRP rebar stress-strain curves are linearly elastic, and contain a definite yield point followed by plast...

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Veröffentlicht in:Journal of composite materials 2006-06, Vol.40 (12), p.1063-1076
Hauptverfasser: Won, Jong-Pil, Park, Chan-Gi
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container_end_page 1076
container_issue 12
container_start_page 1063
container_title Journal of composite materials
container_volume 40
creator Won, Jong-Pil
Park, Chan-Gi
description Hybrid fiber-reinforced polymer (FRP) rebar has emerged as one of the most promising and affordable solutions to the brittle failure problems of ordinary FRP rebar in concrete structures. Hybrid FRP rebar stress-strain curves are linearly elastic, and contain a definite yield point followed by plastic deformation. In this study, the long-term durability performance of hybrid FRP rebar is evaluated. The mechanical properties and durability of one type of carbon FRP rebar, one type of glass FRP rebar, and two types of hybrid FRP rebars are investigated. The rebar specimens are exposed to twelve different environments, including an alkaline solution, an acid solution, a salt solution, deionized water, and repeated freezing and thawing. Short-beam, tensile, and bond tests are used to analyze the mechanical properties and durability of the rebar. The experimental results confirm the desirable resistance of hybrid FRP rebar to aggressive environments.
doi_str_mv 10.1177/0021998305057362
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subjects Applied sciences
Building structure
Buildings. Public works
Composites
Concrete structure
Construction (buildings and works)
Exact sciences and technology
Forms of application and semi-finished materials
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Physics
Polymer industry, paints, wood
Solid mechanics
Structural and continuum mechanics
Technology of polymers
title Effect of Environmental Exposure on the Mechanical and Bonding Properties of Hybrid FRP Reinforcing Bars for Concrete Structures
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