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Study on the interfacial bonding behaviour of corroded steel bars and TRC constrained concrete

Study on the interfacial bonding behaviour of corroded steel bars and TRC constrained concrete This paper aims to evaluate the bonding properties of textile reinforced concrete (TRC)-confined concrete and corroded plain round bars.Design/methodology/approachThe bonding performance of three types of specimens (not reinforced, reinforced after corrosion and reinforced before corrosion) was studied by a central pull out test.FindingsThe ultimate bond strength between the corroded steel bars and the concrete is improved when the corrosion ratio is small. After cracking, the degree of corrosion continues to grow and the ultimate bond strength decreases. TRC reinforcement has no detectable effect on the interfacial bonding properties between concrete and plain round bars when the corrosion of steel bars is small; however, when the concrete cracks under the action of rust corrosion, the TRC constraints can effectively improve the bonding performance of the two components.Practical implicationsTRC layer significantly delayed the chloride penetration rate, which can effectively limit the development of corrosion cracking. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

Study on the interfacial bonding behaviour of corroded steel bars and TRC constrained concrete

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References (21)

Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
0003-5599
DOI
10.1108/acmm-12-2018-2040
Publisher site
See Article on Publisher Site

Abstract

This paper aims to evaluate the bonding properties of textile reinforced concrete (TRC)-confined concrete and corroded plain round bars.Design/methodology/approachThe bonding performance of three types of specimens (not reinforced, reinforced after corrosion and reinforced before corrosion) was studied by a central pull out test.FindingsThe ultimate bond strength between the corroded steel bars and the concrete is improved when the corrosion ratio is small. After cracking, the degree of corrosion continues to grow and the ultimate bond strength decreases. TRC reinforcement has no detectable effect on the interfacial bonding properties between concrete and plain round bars when the corrosion of steel bars is small; however, when the concrete cracks under the action of rust corrosion, the TRC constraints can effectively improve the bonding performance of the two components.Practical implicationsTRC layer significantly delayed the chloride penetration rate, which can effectively limit the development of corrosion cracking.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Aug 22, 2019

Keywords: Bond strength; Textile reinforced concrete; Bond behaviour; Calculation model; Corroded steel bars

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