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US 11,660,779 B2Granted
Methods and compositions for treatment of concrete wash water
AssigneeCarboncure Technologies Inc.
InventorsGeorge Sean Monkman, Mark MacDonald, Dean Paul Forgeron
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Abstract
The invention provides methods and compositions for treating wash water from concrete production with carbon dioxide. The treated wash water can be reused as mix water in fresh batches of concrete.
Claims18
A method of preparing a concrete mix comprising
- (i) adding concrete materials to a mixer;
- (ii) adding mix water to the mixer, wherein the mix water comprises carbonated concrete wash water, and wherein the wash water comprises water produced by washing-out of concrete mixer trucks following delivery of concrete;
- and
- (iii) mixing the water and the concrete materials to produce a concrete mix,
- wherein the carbonated concrete wash water is produced by a method comprising placing wash water in a container and circulating the wash water and adding carbon dioxide to the circulating concrete wash water, wherein the circulating wash water is in a loop in fluid communication with the concrete wash water in the container.
2 more elements
Dependencies are inferred from the claim text.