Use of aqueous emulsions based on propylethoxysilane oligomers as an additive in hydraulically setting cement compositions for reduction of shrinkage characteristics

The invention relates to use of aqueous emulsions based on propylethoxysilane oligomers as an additive in hydraulically setting cement compositions for reduction of shrinkage characteristics. An aqueous oil-in-water emulsion containing a propylethoxysilane oligomer mixture or a mixture of a propylethoxysilane oligomer mixture and octyltriethoxysilane in a weight ratio of 3:1 to 1:3, at least one emulsifier or an emulsifier system, at least one content of a 2-aminoethanol and water is used as an addition in the production of hydraulically setting cement mixtures such as mortar, screed or concrete for reduction of the shrinkage characteristics. 本发明涉及基于丙基乙氧基硅烷低聚物的水性乳液在水泥混合物中用于降低收缩行为的用途。具体地，本说明涉及水性的水包油型乳液作为添加物在制备水硬性固化的水泥混合物如灰浆、砂浆或混凝土时用于降低收缩行为的用途，该乳液包含丙基乙氧基硅烷低聚物混合物或者丙基乙氧基硅烷低聚物混合物与辛基三乙氧基硅烷以3:1至1:3的重量比的混合物、至少种乳化剂或乳化剂体系、至少定含量的2-氨基乙醇和水。