Autogenous shrinkage takes area given that the portland cement hydrates and with no lack of water with the blend instead of the drying shrinkage system. Admixtures could lower such a shrinkage but usually are not precisely intended to do so. They may be both anodic, cathodic, or a mix. Some https://www.tjcyindustrialchem.com/news/cement-additives-and-concrete-admixtures-key-differences.html