Reclaiming of waste concrete

Details Reclaiming of waste concrete Reclaiming of waste concrete

C - Chemistry, Metallurgy

04

B

25/104

C04B 24/00 (2006.01) C04B 18/16 (2006.01) C04B 28/02 (2006.01)

Patent

CA 1315960

- 14- 154-0090 RECLAIMING OF WASTE CONCRETE Abstract of the Disclosure A process for reclaiming mixed unused concrete comprising the steps of 1) before the concrete sets, adding a retarder in an amount sufficient to retard hydration for up to an additional 90 hours, 2) optionally, at the end of the desired retardation period, diluting the retarded concrete with fresh concrete, and 3) adding an accelerator to the retarded concrete to restore it to a settable state. 3700/PG/AY/FZ

545153

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