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Materials 2015, 8(12), 8561-8577; doi:10.3390/ma8125479

The Corrosion Characteristics and Tensile Behavior of Reinforcement under Coupled Carbonation and Static Loading

School of Civil Engineering & Architecture, Ningbo Institute of Technology of Zhejiang University, Ningbo 315100, China
Academic Editors: Raman Singh and Peter J. Uggowitzer
Received: 16 September 2015 / Revised: 20 November 2015 / Accepted: 3 December 2015 / Published: 9 December 2015
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Abstract

This paper describes the non-uniform corrosion characteristics and mechanical properties of reinforcement under coupled action of carbonation and static loading. The two parameters, namely area-box (AB) value and arithmetical mean deviation (Ra), are adopted to characterize the corrosion morphology and pitting distribution from experimental observations. The results show that the static loading affects the corrosion characteristics of reinforcement. Local stress concentration in corroded reinforcement caused by tensile stress drives the corrosion pit pattern to be more irregular. The orthogonal test results from finite element simulations show that pit shape and pit depth are the two significant factors affecting the tensile behavior of reinforcement. Under the condition of similar corrosion mass loss ratio, the maximum plastic strain of corroded reinforcement increases with the increase of Ra and load time-history significantly. View Full-Text
Keywords: reinforcement; carbonation; static loading; coupled effect; non-uniform corrosion; corrosion morphology; finite element analysis reinforcement; carbonation; static loading; coupled effect; non-uniform corrosion; corrosion morphology; finite element analysis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Xu, Y. The Corrosion Characteristics and Tensile Behavior of Reinforcement under Coupled Carbonation and Static Loading. Materials 2015, 8, 8561-8577.

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