Chloride-induced corrosion modelling of cracked reinforced SHCC
Paul, Suvash Chandra
van Zijl, Gideon P.A.G.
Date of Issue2016
School of Mechanical and Aerospace Engineering
Singapore Centre for 3D Printing
Corrosion of steel bars in concrete is usually a slow electrochemical process which may need a long time before damage becomes visible in the reinforced concrete (RC). However, cracks provide quick access to chloride, oxygen and water into concrete and accelerate the corrosion process. Corrosion modelling is essential for structural design for a particular life span, or to inform decisions on repair of RC structures to reach or extend their service life. This paper reports experimental research results of accelerated chloride exposure of cracked reinforced strain hardening cement-based composite (R/SHCC) specimens for a period of one year. Based on these novel results, a corrosion model is proposed which incorporates crack width, crack spacing, free chloride content and cover depth. The model is shown to capture the corrosion results of cracked R/SHCC reported in this paper.
Archives of Civil and Mechanical Engineering
© 2016 Politechnika Wrocławska (Published by Elsevier Urban & Partner Sp. z o.o.). This is the author created version of a work that has been peer reviewed and accepted for publication in Archives of Civil and Mechanical Engineering, published by Elsevier Urban & Partner Sp. z o.o. on behalf of Politechnika Wrocławska. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.acme.2016.04.016].