Invention Grant
US08835535B2 Aqueous dispersions of silica for increasing early strength in cementitious preparations
有权
二氧化硅水分散体，用于增加水泥制剂中的早期强度
- Patent Title: Aqueous dispersions of silica for increasing early strength in cementitious preparations
- Patent Title (中): 二氧化硅水分散体，用于增加水泥制剂中的早期强度
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Application No.: US12446333Application Date: 2007-10-16
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Publication No.: US08835535B2Publication Date: 2014-09-16
- Inventor: Ulrich Fischer , Philipp Wieland , Christian Huebsch , Harald Grassl , Kerstin Becher , Stefanie Scheul , Eva Jetzlsperger
- Applicant: Ulrich Fischer , Philipp Wieland , Christian Huebsch , Harald Grassl , Kerstin Becher , Stefanie Scheul , Eva Jetzlsperger
- Applicant Address: DE Essen DE Trostberg
- Assignee: Evonik Degussa GmbH,Construction Research & Technology GmbH
- Current Assignee: Evonik Degussa GmbH,Construction Research & Technology GmbH
- Current Assignee Address: DE Essen DE Trostberg
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102006049524 20061020
- International Application: PCT/EP2007/061039 WO 20071016
- International Announcement: WO2008/046831 WO 20080424
- Main IPC: C08J3/00
- IPC: C08J3/00 ; C04B14/06 ; C04B40/00
Abstract:
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.
Public/Granted literature
- US20100324173A1 AQUEOUS DISPERSIONS OF SILICA FOR INCREASING EARLY STRENGTH IN CEMENTITIOUS PREPARATIONS Public/Granted day:2010-12-23
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