Autogenous shrinkage requires location since the portland cement hydrates and with no loss of drinking water in the combine as opposed to the drying shrinkage method. Admixtures may lessen this type of shrinkage but are not exclusively intended to accomplish that. Sika presents quite a few forms of cement additives https://www.tjcyindustrialchem.com/news/cement-additives-and-concrete-admixtures-key-differences.html