Stabilized defoamers for cementitious compositions

The present invention discloses additive compositions, cementitious compositions, and methods for controlling air in cementitious compositions in which colloidal nano-particles are used for stabilizing a water-dispersible defoamer within a cement-dispersant-containing aqueous additive formulation fo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KUO, LAWRENCE L, JEKNAVORIAN, ARA A, CHEN, YING
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention discloses additive compositions, cementitious compositions, and methods for controlling air in cementitious compositions in which colloidal nano-particles are used for stabilizing a water-dispersible defoamer within a cement-dispersant-containing aqueous additive formulation for modifying hydratable cementitious compositions such as cement or concrete.