Hydration retarder

Details Hydration retarder Hydration retarder

1991-10-25

1993-06-01

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106819, C04B 736

Patent

active

052155854

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.

REFERENCES:
patent: 4089895 (1978-05-01), Carr
patent: 4964917 (1990-10-01), Bobrowski et al.

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