AQUEOUS DISPERSIONS OF PRECIPITATED SILICA FOR INCREASING EARLY STRENGTH IN CEMENTITIOUS PREPARATIONS
摘要
Dispersion which is free of binders and which contains silica and at least one superplasticizer, the silica being a precipitated silica having a surface area greater than 50 m2/g, the aggregates and/or agglomerates in the dispersion having a median diameter of less than 1 μm and the proportion of silica being from 5 to 50% by weight, based on the total amount of the dispersion, and a process for the preparation thereof and the use thereof as a concrete admixture in cement-containing preparations.
申请公布号
EP2079670(B1)
申请公布日期
2016.08.03
申请号
EP20070821404
申请日期
2007.10.16
申请人
EVONIK DEGUSSA GMBH;CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
发明人
FISCHER, ULRICH;WIELAND, PHILIPP;HÜBSCH, CHRISTIAN;GRASSL, HARALD;BECHER, KERSTIN;SCHEUL,STEFANIE;JETZLSPERGER, EVA