Concrete and mortar additive, process for the preparation thereof, and its use, as well as concrete or mortar containing it
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United States of America Patent
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Feb 14, 2012
Grant Date -
Mar 13, 2008
app pub date -
Nov 24, 2005
filing date -
Nov 25, 2004
priority date (Note) -
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Abstract
A self-compacting concrete and mortar additive is prepared, comprising an aqueous suspension matured and stabilized for 1-7 days, preferably 1-2 days, and having a consistency adapted to the dosing equipment used for dosing the additive when mixing concrete or mortar, and having a pH of 6.5-8, preferably 7 and containing 5-30, preferably 8-20, preferably 10-12% by weight of dry solid of a type of clay, consisting of clay minerals selected from the smectite, vermiculite and/or chlorite group.
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