Hydraulic cement set-accelerating admixtures incorporating...

Details Hydraulic cement set-accelerating admixtures incorporating... Hydraulic cement set-accelerating admixtures incorporating...

C - Chemistry, Metallurgy

04

B

C04B 24/02 (2006.01) C04B 22/08 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01)

Patent

CA 2086648

New set-accelerating admixtures for hydraulic cement compositions are disclosed. These admixtures incorporate known set accelerators and certain low molecular weight glycols, e.g., glycerol and ethylene glycol, are found to be surprisingly effective in decreasing the initial set time of hydraulic cements, mortars, and concretes, and are advantageous as reduced-temperature set-accelerators.

Cette invention concerne de nouveaux accélérateurs de prise pour ciments hydrauliques. Ces additifs comprennent des accélérateurs connus et certains glycols à faible masse moléculaire, glycérol et glycoléthylène par exemple, qui sont étonnamment efficaces à réduire le temps de prise initial des ciments, mortiers et bétons hydrauliques et qui sont particulièrement avantageux par temps froid.

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