Methods and compositions for concrete production
AssigneeCarboncure Technologies Inc.
InventorsGeorge Sean Monkman, Kevin Cail, Paul J. Sandberg, Mark MacDonald, Joshua Jeremy Brown, Dean Paul Forgeron
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Abstract
The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be in a stationary mixer or a transportable mixer, such as a drum of a ready-mix truck.
Claims21
A method for carbonating a concrete mix comprising a type of cement comprising delivering dose of CO2 to the concrete mix while it is mixing in a mixer, wherein the delivery of the carbon dioxide commences within 3 minutes of the start of mixing of the concrete mix, and wherein the duration of the delivery of the carbon dioxide is 10 seconds to 4 minutes.
A method for carbonating a concrete mix in a drum of a ready-mix truck comprising
- (i) positioning a first conduit for delivery of components of the concrete mix to the drum, wherein the first conduit contains a second conduit for delivery of carbon dioxide to the concrete mix, and wherein the components of the concrete mix comprise at least cement and water;
- (ii) delivering the components of the concrete mix to the drum via the first conduit to provide a concrete mix in the drum;
- (iii) mixing the concrete mix;
- and
- (iv) delivering a dose of carbon dioxide to the mixing concrete via an opening of the second conduit.
An apparatus for delivering carbon dioxide to a drum of a ready-mix truck comprising
- (i) a first conduit configured for delivery of components of concrete to the drum of the ready-mix truck;
- (ii) a second conduit contained within or attached to the first conduit configured for delivery of carbon dioxide to the drum of the ready-mix truck.
Dependencies are inferred from the claim text.