Premium
Studying chloride ions and corrosion properties of reinforced concrete with a green inhibitor and plasticizers
Author(s) -
Abdulsada Shaymaa A.,
Török Tamás I.
Publication year - 2020
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201900580
Subject(s) - corrosion , chloride , materials science , plasticizer , ion , corrosion inhibitor , metallurgy , composite material , chemistry , organic chemistry
The breakthrough and diffusion of chloride ions into reinforced concrete structures is the major contributing factor for inducing corrosion of the steel reinforcement. This work presents a study of the total chloride contents in concrete and the corrosion process by testing electrical resistivity and half‐cell potential of concrete samples. The novelty of this work in the use of a green inhibitor—orange peel extract. The analysis was based on an experimental investigation of the samples with time of immersion in 3.5 wt% NaCl aqueous solutions at room temperature according to European Standards. For this study, different mixtures of concrete were prepared by adding two types of superplastisizers and green inhibitors in different concentrations. The results of the Cl − ions test showed that all the samples (except sample C2) after an immersion testing period of 6 months contained Cl − ions in high concentrations, indicating a greater risk of corrosion. Sample C2 (with green inhibitor and Oxydtron superplasticizer) showed the highest resistance against the chloride ion ingress measured by following the Cl − concentration changes up to the end of the 6 months testing period. This samples' good resistance to corrosion in the tested environment was also proved by the results of several sets of measurements of the electrical resistivity and half‐cell potentials carried on the concrete test samples.