Additive for hydraulically setting compounds

摘要

The invention relates to an additive for hydraulically setting compounds, comprising a colloidally dispersing preparation of at least one water-soluble salt of a multivalent metal cation, at least one compound which is capable of releasing an anion that forms a poorly soluble salt together with the multivalent metal cation, and at least one polymer dispersant which comprises anionic and/or anionogenic groups and polyether side chains.