# US 2016/0355442 A1 · Methods and Compositions for Concrete Production

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- Number: US 2016/0355442 A1
- Document ID: US20160355442A1
- Status: Published application
- Kind: A1
- Application number: 15/170,018
- Filed: 2016-06-01
- Published: 2016-12-08
- Earliest claimed: 2013-06-25
- Assignees: Carboncure Technologies Inc.
- Applicants: CarbonCure Technologies Inc.
- Inventors: Robert Niven; George Sean Monkman; Dean Paul Forgeron; Kevin Cail; Joshua Jeremy Brown; Paul J. Sandberg; Mark MacDonald
- Web page: https://patentgrep.com/patent/US20160355442A1

## CPC

- B28C 5/462: {Mixing at sub- or super-atmospheric pressure (B28C5/1261 takes precedence)}
- B28C 7/024: {by measuring properties of the mixture, e.g. moisture, electrical resistivity, density}
- B28C 7/04: Supplying or proportioning the ingredients {(B28C7/022 takes precedence; forming a predetermined ratio of the components to be mixed, in general B01F35/80)}
- C04B 7/02: Portland cement
- C04B 7/26: from raw materials containing flue dust {, i.e. fly ash (C04B7/243 takes precedence)}
- C04B 28/04: Portland cements
- C04B 40/0091: {Processes of mixing characterised by carbon dioxide treatment}
- Y02P 40/10: Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P 40/18: Carbon capture and storage [CCS]
- B28C: PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER (preparing material for foundry moulds B22C5/00)
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be controlled by one or more feedback mechanisms to adjust carbon dioxide delivery based on one or more characteristics of the mix or other aspects of the mixing operation.

## Claims

### Claim 1

A method for producing a carbonated cement mix in a mix operation in a cement mix apparatus comprising
i. contacting a cement mix comprising cement binder and aggregate in a mixer with carbon dioxide while the cement mix is mixing,
ii. monitoring a characteristic of the cement binder, the cement mix, a gas mixture in contact with the cement mix or the mixer, or a component of the cement mix apparatus; and
iii. modulating the exposure of the cement mix to the carbon dioxide or another characteristic of the cement mix operation, or a combination thereof according to the characteristic monitored in step (ii).

### Claim at position 2

-30. (canceled)