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US 10,927,042 B2Granted
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
Life of this patent
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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.
Claims12
A method for carbonating a cement mix comprising
- (i) delivering a first portion of mix water to a mixer, wherein the mixer is a drum of a ready-mix truck that is open to the atmosphere;
- (ii) delivering cement to the mixer to mix with the first portion of water to form a cement mix, wherein the cement is delivered to the mixer via a first conduit;
- (iii) after the delivery of the first portion of the water, and during, or within 2 minutes after, the delivery of the cement to the mixer, commencing delivery of carbon dioxide to the cement mix in the mixer while the cement mix is mixing, wherein the carbon dioxide comprises gaseous carbon dioxide, and wherein the carbon dioxide is delivered to the mixer via a second conduit, positioned inside the first conduit;
- (iv) halting delivery of carbon dioxide to the mixer after a desired dose of carbon dioxide is delivered to the mixing cement mix in the mixer;
- (v) delivering a second portion of mix water to the cement mix during or after delivery of carbon dioxide to the mixer.
2 more elements
Dependencies are inferred from the claim text.