TY  - JOUR
AB  - Purpose– This work seeks to present a systematic study that aimed to provide quantitative understanding of the fundamental factors that influence the chloride threshold of pitting corrosion of steel in concrete, by conducting a set of laboratory tests to assess the corrosion potential (Ecorr) and pitting potential (Epit) of steel coupons in simulated concrete pore solutions.Design/methodology/approach– With the aid of artificial neural network, the laboratory data were used to establish a phenomenological model correlating the influential factors (total chloride concentration, chloride binding, solution pH, and dissolved oxygen (DO) concentration) with the pitting risk (characterized by Ecorr−Epit). Three‐dimensional response surfaces were then constructed to illustrate such predicted correlations and to shed light on the complex interactions between various influential factors.Findings– The results indicate that the threshold [Cl−]/[OH−] of steel rebar in simulated concrete pore solutions is a function of DO concentration, pH and chloride binding, instead of a unique value.Research limitations/implications– The limitations and implications of the research findings were also discussed.Practical implications– This research could have significant practical implications in predicting the service life of new or existing reinforced concrete in chloride‐laden environments.Originality/value– This study further advances the knowledge base relevant to the chloride‐induced corrosion of steel rebar in concrete.
VL  - 58
IS  - 4
SN  - 0003-5599
DO  - 10.1108/00035591111148894
UR  - https://doi.org/10.1108/00035591111148894
AU  - Shi Xianming
AU  - Anh Nguyen Tuan
AU  - Kumar Prathish
AU  - Liu Yajun
PY  - 2011
Y1  - 2011/01/01
TI  - A phenomenological model for the chloride threshold of pitting corrosion of steel in simulated concrete pore solutions
T2  - Anti-Corrosion Methods and Materials
PB  - Emerald Group Publishing Limited
SP  - 179
EP  - 189
Y2  - 2024/05/06
ER  -