Research progress on the chloride binding capability of cement-based composites

As chloride ions ingress into cement-based composites, the service life of the cementitious materials will be negatively affected when the part overloading the content threshold of chloride ion can not be bound by hydrated products in cement-based materials. This paper doesn't only indicate the chloride binding capability as well as the various effects of comprehensive influential factors correspondingly. But it also elucidates different chloride binding mechanisms of various cement matrix materials. In addition, the relationship between chloride binding and chloride permeability was also reconsidered in this paper. Especially, for the prediction to service life-span of reinforced concrete structures with chlorination, the authors reflect on the contribution of the chloride binding. Ultimately, on the basis of considerable significant existing researches some vital issues and challenges with relevant countermeasure are proposed by the authors. (C) 2020 The Ceramic Society of Japan. All rights reserved.