Hydration retarder

Details Hydration retarder Hydration retarder

C - Chemistry, Metallurgy

04

B

C04B 24/00 (2006.01) C04B 40/06 (2006.01)

Patent

CA 2080774

ABSTRACT A method of reclaiming unset cement compositions by mixing a polymethoxy polyphosphonate to the unset composition to cause long-term retardation of cement hydration and subsequently treating the composition with a set accelerator to reinitiate hydration.

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