Hardening accelerator containing ettringite and calcium silicate hydrate

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United States of America Patent

PATENT NO 9676666
SERIAL NO

14914993

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Abstract

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The invention concerns a process for the preparation of a calcium silicate hydrate and ettringite containing hardening accelerator composition by reaction of a water-soluble calcium compound, silicate compound, aluminum compound and a sulfate compound, wherein the molar ratio of silicon to sulfate is from 2/1 to 30/1 and the reaction of the four compounds being carried out in the presence of an aqueous solution which contains a comb polymer suitable as a plasticizer for hydraulic binders. Also concerned are the use of said accelerators in building material mixtures, the building material mixtures containing said accelerators and a process for the preparation of a sprayable binder composition in which said accelerators are used.

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Patent Owner(s)

Patent OwnerAddress
BASF CONSTRUCTION SOLUTIONS GMBH83308 TROSTBERG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hesse, Christoph Ebersberg, DE 28 178
Loges, Niklas Pittenhart, DE 5 5

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