# US 10,246,379 B2 · Methods and compositions for concrete production > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,379 B2 - Document ID: US10246379B2 - Status: Granted - Kind: B2 - Application number: 15/170,018 - Filed: 2016-06-01 - Published: 2016-12-08 - Granted: 2019-04-02 - 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/US10246379B2 ## 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 system for carbonating a cement mix at a mix site comprising (i) a mixer for mixing the cement mix; (ii) an apparatus to deliver carbon dioxide to the cement mix while the mix is mixing; (iii) a telemetry system to transmit information regarding the cement mix to a central location remote from the mix site, wherein the central location stores data regarding the cement mix for use in future cement mixes and/or for use in modification of the same or similar cement mix in the mixer or in other mixers. ### Claim 2 (depends on 1) The system of claim 1 wherein the mixer is a stationary mixer. ### Claim 3 (depends on 1) The system of claim 1 wherein the mixer is a transportable mixer. ### Claim 4 (depends on 3) The system of claim 3 wherein the transportable mixer comprises a drum of a ready mix truck. ### Claim 5 (depends on 1) The system of claim 1 comprising a plurality of mix sites at a plurality of locations, each of which comprises a mixer for mixing a cement mix, an apparatus for carbonating the cement mix while it is mixing, and a telemetry system for transmitting information regarding the cement mix to a central location wherein the central location stores data regarding the cement mix for use in future cement mixes and/or for use in modification of a future cement mix of the same or similar cement mix in the mixer or in other mixers. ### Claim 6 (depends on 5) The system of claim 5 wherein the plurality of mixers comprises at least 3 different mixers at 3 different locations. ### Claim 7 (depends on 1) The system of claim 1 wherein the information regarding the cement mix comprises information regarding carbon dioxide uptake of the cement mix, rheology of the cement mix at one or more time points, strength of the cement mix at one or more time points, shrinkage of the cement mix, water absorption of the cement mix, elastic modulus of the cement mix, density of the cement mix, permeability of the cement mix, calcite content of the cement mix, or a combination thereof. ### Claim 8 (depends on 7) The system of claim 7 wherein the information comprises information regarding rheology of the cement mix at one or more time points, strength of the cement mix at one or more time points, or a combination thereof. ### Claim 9 (depends on 1) The system of claim 1 wherein the modification of a future cement mix comprises modification of (a) total amount of carbon dioxide added to the cement mix, (b) rate of addition of carbon dioxide, (c) time of addition of carbon dioxide to the cement mix, (d) whether or not an admixture is added to the cement mix, (e) type of admixture added to the cement mix, (f) timing of addition of admixture to the cement mix, (g) amount of admixture added to the cement mix, (h) amount of water added to the cement mix, (i) timing of addition of water to the cement mix, (j) cooling the cement mix during or after carbon dioxide addition, or a combination thereof. ### Claim 10 (depends on 9) The system of claim 9 wherein the modification of a future cement mix comprises modification of total amount of carbon dioxide added to the cement mix. ### Claim 11 (depends on 2) The system of claim 2 wherein the stationary mixer is a batch mixer in a ready-mix operation. ### Claim 12 (depends on 5) The system of claim 5 wherein each of the mix sites comprises one or more sensors and/or one or more controllers that send information to the telemetry system for the mix site to be sent to a controller at the central location. ### Claim 13 (depends on 12) The system of claim 12 wherein the controller at the central location is configured to process the information transmitted by the sensors and/or controllers and provide updated and/or modified mix instruction to the cement mix operations. ### Claim 14 (depends on 5) The system of claim 5 wherein the controller at the central location is configured to learn from the transmitted information and to provide updated and/or modified information to the mix operations based on said learning. ### Claim 15 (depends on 6) The system of claim 6 wherein the plurality of mixers comprises at least 10 separate mixers. ### Claim 16 (depends on 1) The system of claim 1 further comprising a human machine interface (HMI) for inputing information manually to be sent via the telemetry system to the central location. ### Claim 17 (depends on 1) The system of claim 1 wherein the apparatus to deliver carbon dioxide to the mixer is configured to convert liquid carbon dioxide to solid and gaseous carbon dioxide and deliver the mixture to the cement mix. ### Claim 18 (depends on 17) The system of claim 17 wherein the apparatus is configured to deliver a mixture of solid and gaseous carbon dioxide to the mixer in a ratio of 1:2 to 2:1 solid:gaseous carbon dioxide. ### Claim 19 (depends on 17) The system of claim 17 configured to deliver the carbon dioxide to the cement mix in a dose of 0.01-15% by weight cement (bwc). ### Claim 20 (depends on 1) The system of claim 1 wherein the apparatus to deliver carbon dioxide to the cement mix is configured to deliver carbon dioxide to the surface of the cement mix from an opening or plurality of openings that are at least 100 cm from the surface of the cement mix.