Cement grinding aid and set retarder

摘要: Additives for use as grinding aids and set retarders in the manufacture of hydraulic cement composed polyglycerol, preferably a polyglycerol selected from group di-, tri-, tetraglycerol mixtures thereof, additive being used either alone or combination with at least one water-soluble glycol, hydroxy-alkyl amine, salt sulfonated lignin an aliphatic acid having no more than three carbon atoms, product this addition method making product.