Cement accelerator

US8545620B2 · kind B2 · utility

Assignee

• CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

• Karl Frenkenberger · Oberottmarshausen, DE
• Stefan Köhler · Gaildorf, DE
• Thomas Heichele · Bobingen, DE
• Klaus-Dieter Hötzl · Augsburg, DE
• Patrick Weiss · Augsburg, DE
• Alexander Dressen · Augsburg, DE

Key dates

• Filing date: Mar 7, 2011
• Grant date: Oct 1, 2013
• Expiry date: Mar 7, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/91
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement, c) at least one trifunctional polyalkylene glycol and d) optionally calcium sulphate. Additionally disclosed is the use of at least one polyalkylene glycol as an accelerator for an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement and d) optionally calcium sulphate.