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

Materials

Yidong Xu¹  Raman Singh¹ 

[1] School of Civil Engineering & Architecture, Ningbo Institute of Technology of Zhejiang University, Ningbo 315100, China

关键词: reinforcement;    carbonation;    static loading;    coupled effect;    non-uniform corrosion;    corrosion morphology;    finite element analysis;   

DOI  :  10.3390/ma8125479

来源: mdpi

【 摘 要 】

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 (R_a), 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 R_a and load time-history significantly.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.