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US 2024/0100737 A1Published application
Methods and compositions for treatment of concrete wash water
AssigneeCarboncure Technologies Inc.
InventorsGeorge Sean MONKMAN, Mark MACDONALD, Dean Paul FORGERON
Life of this patent
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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.
Claims22
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, wherein the carbonated wash water is produced by exposing concrete wash water to carbon dioxide while moving the wash water to prevent settling of solids;
- and
- (iii) mixing the water and the concrete materials to produce a concrete mix.
1 more element
3-7. (canceled)
15-25. (canceled)
An apparatus for carbonating concrete wash water wherein the wash water comprises cement and/or supplementary cementitious materials (SCM), comprising (i) a source of carbon dioxide;
- (ii) a first conduit operably connected to the source of carbon dioxide that runs to a wash water container and/or a circulation loop operably connected to the wash water container to provide carbon dioxide to carbonate the concrete wash water;
- (iii) a system to prevent settling of solids in the wash water;
- and (iv) a system to transport the carbonated wash water to a concrete mix operation where the carbonated wash water is used as mix water in a concrete mix.
Dependencies are inferred from the claim text.