Method to produce durable non-vitrified fly ash bricks and...

Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing

Reexamination Certificate

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C106S724000, C106S819000, C106S823000, C106SDIG002, C264S333000, C264SDIG049

Reexamination Certificate

active

07998268

ABSTRACT:
A method of making durable, non-vitrified masonry units comprising fly ash, the method comprising mixing fly ash comprising a minimum of 15% CaO by weight and no more than about 10% loss on ignition, water, and an air entrainment agent to form a fly ash mixture; compacting the fly ash mixture in a shaping device by applying pressure of at least 1000 psi to the fly ash mixture; and curing the compacted fly ash mixture to cause the mixture to harden and gain strength.

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