us10654191b2 carbon dioxide treatment of concrete

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US10654191B2 - Carbon dioxide treatment of concrete ...

US10654191B2 US15/284,186 US201615284186A US10654191B2 US 10654191 B2 US10654191 B2 US 10654191B2 US 201615284186 A US201615284186 A US 201615284186A US 10654191 B2 US10654191 B2 US 10654191B2 Authority US United States Prior art keywords concrete carbon dioxide gas mold feedbox Prior art date 2012-10-25 Legal status (The legal status is an assumption

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US8845940B2 - Carbon dioxide treatment of concrete ...

Fresh concrete is treated with carbon dioxide prior to delivery to a product mold for forming concrete products. Carbon dioxide gas is directed through a manifold, which may be coupled to a feedbox or a hopper, upstream from the product mold. Treating the fresh concrete with the carbon dioxide gas while it is in a loose state prior to placement in the product mold may generally promote uniform ...

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Carbon Dioxide (CO2) Emissions of Concrete

Carbon Dioxide (CO 2) Emissions of Concrete Presented by: Ir. Stephen Leung A M i l T h lArup Ma erials Technology 27 February 2009 SCCT 2009. t Gl b l W i Ei i Cb Ei i C Presentation Content • Global Warming • Hong Kong Climate Changes and CO 2 Emissions • Carbon Footprint (t CO 2) and Reducing

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US9492945B2 - Carbon dioxide treatment of concrete ...

US9492945B2 US14/282,965 US201414282965A US9492945B2 US 9492945 B2 US9492945 B2 US 9492945B2 US 201414282965 A US201414282965 A US 201414282965A US 9492945 B2 US9492945 B2

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CarbonCure’s CO2-infused process strengthens concrete

Apr 19, 2017  CarbonCure Technologies of Dartmouth, N.S. is looking to make concrete stronger and greener by infusing it with recycled carbon dioxide (CO2). The concept isn’t new, but CarbonCure’s process is. The company’s patented technology has been used in several recent construction projects and earned the firm industry kudos.

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US Patent for Carbon dioxide treatment of concrete ...

Aug 03, 2020  Fresh concrete is treated with carbon dioxide prior to delivery to a product mold for forming concrete products. Carbon dioxide gas is directed through a manifold, which may be coupled to a feedbox or a hopper, upstream from the product mold. Treating the fresh concrete with the carbon dioxide gas while it is in a loose state prior to placement in the product mold may generally promote

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WO2014063242A1 - Carbon dioxide treatment of concrete ...

B — PERFORMING OPERATIONS; TRANSPORTING; B28 — WORKING CEMENT, CLAY, OR STONE; B28B — SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING C

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CarbonCure’s CO2-infused process strengthens concrete

Apr 19, 2017  CarbonCure Technologies of Dartmouth, N.S. is looking to make concrete stronger and greener by infusing it with recycled carbon dioxide (CO2). The concept isn’t new, but CarbonCure’s process is. The company’s patented technology has been used in several recent construction projects and earned the firm industry kudos.

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Effect of CO2 surface treatment on penetrability and ...

After demolding, specimens were placed in the CO 2 surface treatment room. The CO 2 surface treatment setup is shown in Fig. 2.Procedures for CO 2 surface treatment are as follows: (1) the vacuum valve was opened and set to −0.1 MPa. Saturated calcium nitrate solution was used to control the humidity, so that the relative humidity in the carbon dioxide curing tank remained at around 70 %; (2 ...

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Environmentally-friendly concrete cuts carbon emissions by ...

Aug 18, 2021  Environmentally-friendly concrete cuts carbon emissions by two thirds. By ET editorial staff. Published Wednesday, August 18, 2021. A climate-friendly cement has been developed that produces up to two-thirds fewer carbon emissions during its production than conventional cement. Researchers at the Martin Luther University Halle-Wittenberg (MLU ...

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Anti-slip concrete mixer two-phase electric enthalpy

Best Electric Handheld Concrete MixersJul 19, 2020 ApexOne AC 110V 1800W Anti-Slip Handheld 6-Speed Electric Mixer. Finally, you might want to get your

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Contest winners awarded $20 million for creating carbon ...

Apr 19, 2021  The winner at the Wyoming plant, Los Angeles-based CarbonBuilt, used carbon dioxide to cure concrete, trapping it in a process that also emitted less of the greenhouse gas compared with ...

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Substantial global carbon uptake by cement carbonation ...

Nov 21, 2016  Figure 1a shows the annual carbon sequestration by cement materials between 1930 and 2013, disaggregated by world region. Based on our uncertainty analysis, we find a mean estimated global carbon ...

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General Waste Discharge Requirements for Aggregate

Oct 24, 2019  Based on U.S. Environmental Protection Agency carbon dioxide emissions estimate of 22.2 pounds per gallon of diesel burned. Source: U.S. Department of Energy, Fact #576: Carbon Dioxide from Gasoline and Diesel Fuel (June 22, 2009).

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BMP C252: High pH Neutralization Using CO2

BMP C252: High pH Neutralization Using CO 2. Purpose When pH levels in stormwater rise above 8.5 it is necessary to lower the pH levels to the acceptable range of 6.5 to 8.5, this process is called pH neutralization. pH neutralization involves the use of solid or compressed carbon dioxide gas in water requiring neutralization.

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Scientists develop alternative cement with low carbon ...

Aug 18, 2021  Carbon dioxide (CO 2) emissions can be reduced during production by up to two thirds when a previously unused overburden from bauxite mining is

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Considerations from the past for the future of mineral ...

Integrated Mineral Carbonation Reactor Technology for Sustainable Carbon Dioxide Sequestration: CO 2 Energy Reactor. Energy Procedia, (2013), 37, 5884-5891. CO 2 Energy Reactor –Integrated Mineral Carbonation: Perspectives on Lab-Scale Investigation and Products Valorization. Frontiers in Energy Research, (2016), 4, 5.

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Treating concrete water Project Scotland

Mar 24, 2016  Lastly it is a much more cost effective treatment – costing around £0.35/m3 compared to circa £2.50/m3 for citric acid and £1.50/m3 for mineral acids. In short, when you weigh up the technical, environmental, health and safety and cost issues, carbon dioxide is by far the best way to neutralise highly polluting concrete washwater.

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Concrete Rehabilitation - OXO H2O Solutions

Note: New concrete has a pH of 11+, which passivates the corrosion of reinforcing steel. Carbon dioxide can lower the pH through a process called carbon dioxide diffusion. When the OXOCRETE System is applied from the surface, it has fully restored pH to better-than-new conditions.

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Read "Gaseous Carbon Waste Streams Utilization: Status and ...

For example, carbon dioxide injection into fresh concrete results in uptake that is limited by the overall rate of carbon dioxide reaction with calcium and magnesium, which in turn may be limited by the solubility of carbon dioxide in alkaline aqueous solution (i.e., ≤ 0.01 g

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Visualizing Cement Hydration on a Molecular Level – Could ...

Jun 09, 2021  Imaging technique could enable new pathways for reducing concrete’s hefty carbon footprint, as well as for 3-D printing of concrete. The concrete world that surrounds us owes its shape and durability to chemical reactions that start when ordinary

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Substantial global carbon uptake by cement carbonation ...

Nov 21, 2016  Figure 1a shows the annual carbon sequestration by cement materials between 1930 and 2013, disaggregated by world region. Based on our uncertainty analysis, we find a mean estimated global carbon ...

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Patents Assigned to CARBONCURE TECHNOLOGIES INC. -

Jul 14, 2017  Abstract: Fresh concrete is treated with carbon dioxide prior to delivery to a product mold for forming concrete products. Carbon dioxide gas is directed through a manifold, which may be coupled to a feedbox or a hopper, upstream from the product mold. Treating the fresh concrete with the carbon dioxide gas while it is in a loose state prior to placement in the product mold may generally ...

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Robert Niven - Founder/ CEO/ Chair - CarbonCure ...

CarbonCure’s retrofit technology enables concrete producers to use waste carbon dioxide (CO₂) to produce stronger, more sustainable concrete and gain a competitive advantage. CarbonCure is on a mission to reduce the embodied carbon footprint of the built environment, with the goal of reducing CO₂ emissions by 500 megatonnes annually.

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‪Sean Monkman‬ - ‪Google Scholar‬

The impacts of in-situ carbonate seeding on the early hydration of tricalcium silicate. S Monkman, BEJ Lee, K Grandfield, M MacDonald, L Raki. Cement and Concrete Research 136, 106179. , 2020. 2020. Methods and compositions for treatment of concrete wash water.

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