Methods for making concrete compositions

Details Methods for making concrete compositions Methods for making concrete compositions

C - Chemistry, Metallurgy

04

B

C04B 38/08 (2006.01) B28C 7/06 (2006.01) C04B 14/42 (2006.01) C04B 16/08 (2006.01)

Patent

CA 2679699

A method of making a cementitious composition that includes combining cement, water and optionally aggregates and optionally additives to form an aqueous cement slurry; adding expanded polymer particles to the aqueous cement slurry; and forming a dispersion of expanded polymer particles in the aqueous cement slurry. The expanded polymer particles have an average particle diameter of from 200 µm to 5,000 µm, a bulk density of from 0.02 g/cc to 0.64 g/cc, and an aspect ratio of from 1 to 3.

L'invention concerne un procédé de fabrication d'une composition cimentaire qui comprend la combinaison d'un ciment, d'eau et facultativement d'agrégats et facultativement d'additifs pour former un coulis de ciment aqueux ; l'ajout de particules expansées au coulis de ciment aqueux ; et la formation d'une dispersion de particules polymères expansées dans le coulis de ciment aqueux. Les particules polymères expansées ont un diamètre moyen de particule allant de 200 µm à 5 000 µm, une masse volumique en vrac allant de 0,02 g/cm3 à 0,64 g/cm3 et un rapport longueur/diamètre allant de 1 à 3.

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