The Bond Behavior of Srp-To-Concrete System in Field Environment

Abstract

In this study concrete beams reinforced with a steel reinforced polymer (SRP) strengthening system that were loaded and unloaded were subjected to real-time seasonal weather and solar exposure in Rolla, MO for 12 months. Two types of steel fibers (micro-fine galvanized and micro-fine brass coating steel fibers) were used in this study. A total of 22 SRP specimens, including 12 specimens loaded and 10 specimens unloaded, were maintained in outdoor weather in Rolla, which has moderate UV radiation with various freeze-thaw, and variable temperature and moisture conditions. Flexural bending tests and direct pull-off bond tests were performed to evaluate the long-term bond performance of SRP-to-concrete interfaces. The flexural bending test results illustrated that the bond behavior between SRP and concrete was affected by the harsh environmental conditioning. The results for the pull-off test were scattered. This high variability was related to several issues such as non-homogenous characteristic of the concrete, applied load rate using hand, or the inappropriateness to prepare the specimens.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Direct pull-off bond tests; Flexural bending tests; Freeze-thaw; Micro-fine galvanized and micro-fine brass coating steel fibers; Steel reinforced polymer (SRP); Temperature and moisture conditions

International Standard Book Number (ISBN)

978-000000000-2

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Science Direct, All rights reserved.

Publication Date

01 Jan 2018

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