Method to produce durable non-vitrified fly ash bricks and blocks
AssigneeEcologic Tech Company, Inc.
InventorHenry Liu
Life of this patent
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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.
Claims20
A method to produce 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 about 1000 psi to the fly ash mixture;
- and
- curing the compacted fly ash mixture to cause the mixture to harden and gain strength.
A method to produce 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, wherein the amount of water in the fly ash mixture is no greater than that which would produce free water upon compaction of the fly ash mixture;
- compacting the fly ash mixture under external force in a shaping device;
- and
- curing the compacted fly ash mixture to cause the mixture to harden and gain strength.
Dependencies are inferred from the claim text.