Hydraulic cement set accelerators based on nitroalcohols

Details Hydraulic cement set accelerators based on nitroalcohols Hydraulic cement set accelerators based on nitroalcohols

C - Chemistry, Metallurgy

04

B

C04B 24/02 (2006.01) C04B 24/12 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2222523

Hydraulic cement set-accelerating admixture compositions; cement compositions containing such admixtures; and methods for preparing said cement compositions. The admixture compositions comprise one or more nitroalcohols present in an amount effective to increase the set acceleration of a hydraulic cement composition. The invention further relates to a method of making a hydraulic cement composition comprising adding to a cement composition comprising a hydraulic cement binder, a nitroalcohol component in an amount effective to increase the set-acceleration of the binder, and to a cement composition comprising a hydraulic cement binder and a nitroalcohol set- accelerating agent.

L'invention concerne un adjuvant accélérateur de durcissement pour ciment hydraulique, des compositions de ciment contenant de tels adjuvants, et des procédés pour préparer ces compositions de ciment. L'adjuvant contient un ou plusieurs nitroalcools présents en une quantité suffisante pour augmenter la vitesse de durcissement du ciment hydraulique. L'invention concerne en outre un procédé pour préparer une composition de ciment hydraulique consistant à ajouter à une composition de ciment contenant un liant pour ciment hydraulique, un nitroalcool en une quantité suffisante pour augmenter la vitesse de durcissement du liant et une composition de ciment contenant un liant pour ciment hydraulique et un nitroalcool comme agent d'accélération de durcissement.

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