SET CONTROL COMPOSITION FOR CEMENTITIOUS SYSTEMS

SET CONTROL COMPOSITION FOR CEMENTITIOUS SYSTEMS

A set control composition for cementitious systems comprises a) (a-1) a hydroxy monocarboxylic acid or a salt thereof, and (a-2) optionally, a polycarboxylic acid having a carboxylic acid equivalent weight of 333 or less, or a salt thereof, the carboxylic acid equivalent weight being the molecular w...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SACHSENHAUSER, Bernhard, BANDIERA, Massimo, FARRA, Ramzi, WELDERT, Kai Steffen, LORENZ, Klaus, KLEIN, Matthias, SCHWESIG, Peter, HIMMELEIN, Sabine
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:A set control composition for cementitious systems comprises a) (a-1) a hydroxy monocarboxylic acid or a salt thereof, and (a-2) optionally, a polycarboxylic acid having a carboxylic acid equivalent weight of 333 or less, or a salt thereof, the carboxylic acid equivalent weight being the molecular weight of the polycarboxylic acid divided by the number of carboxylic acid functional groups, wherein (a-1) contributes at least 90% of the carboxyl groups to the total number of carboxyl groups of (a-1) and (a-2), b) at least one of (b-1) a borate source, and (b-2) a carbonate source, wherein the carbonate source is selected from inorganic carbonates having an aqueous solubility of 0.1 g-L