| abstract |
The present invention relates to an additive for hydraulically setting compositions, comprising an aqueous colloidally disperse preparation of at least one water-soluble salt of a polyvalent metal cation, at least one compound capable of releasing an anion which forms a sparingly soluble salt with the polyvalent metal cation, and at least one polymer Dispersant comprising anionic and / or anionogenic groups and polyether side chains. |