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US 2014/0197563 A1Published application
Carbon dioxide sequestration in concrete articles
OwnerRobert Niven, George Sean Monkman +1inventors
InventorsRobert Niven, George Sean Monkman, Dean Forgeron
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Abstract
Concrete articles, including blocks, substantially planar products (such as pavers) and hollow products (such as hollow pipes), are formed in a mold while carbon dioxide is injected into the concrete in the mold, through perforations.
Claims24
1-26. (canceled)
A process, comprising:
- providing a molding machine adapted to form a concrete article;
- providing a mold within the molding machine, the mold comprising a plurality of perforations distributed across at least one molding surface;
- and
- injecting carbon dioxide into concrete in the mold through the perforations.
1 more element
An apparatus, comprising:
- a mold shaped to form one or more surfaces of a concrete article, the mold comprising at least one molding surface comprising a plurality of perforations;
- a conduit for gas to flow from an inlet to each of the perforations;
- and
- a gas injection system adapted to inject carbon dioxide into concrete in the mold through the perforations while the concrete is in the mold.
1 more element
(canceled)
A process of accelerating the curing of concrete while of sequestering carbon dioxide in the concrete, comprising:
- preparing the concrete comprising at least aggregate, a cementitious material, and water;
- and
- injecting a stream of carbon dioxide-containing gas under pressure into a subsurface volume of the concrete at a plurality of locations adjoining the concrete.
(canceled)
42-43. (canceled)
Dependencies are inferred from the claim text.