Concrete mixing drum cleaning method and apparatus

Details Concrete mixing drum cleaning method and apparatus Concrete mixing drum cleaning method and apparatus

1991-04-09

1993-09-14

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Additive materials for inorganic cements which contain a...

106708, 106725, 106727, 106729, 106804, 106806, 106808, 106809, 106823, 134 2218, 134 34, C04B 4000, B08B 9093

Patent

active

052444988

ABSTRACT:
The present invention relates to a method of retarding the set of residual concrete in a concrete holding vessel comprising uniformly directing an aqueous solution containing an effective amount of a set retarding agent against the residual concrete on the inner surface of said concrete holding vessel with sufficient pressure to retard concrete set with less than about 3 gallons of aqueous solution per every 10 lbs. of residual concrete. The present invention also relates to an apparatus which utilizes a minimal amount of wash water.

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patent: 4859249 (1989-08-01), Valentini
patent: 4904503 (1990-02-01), Hilton et al.
patent: 4964917 (1990-10-01), Bobrowski

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