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Reduced-carbon footprint concrete compositions

  • US 7,815,880 B2
  • Filed: 10/22/2009
  • Issued: 10/19/2010
  • Est. Priority Date: 09/30/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • a) producing synthetic carbonates from a divalent cation-containing solution and an industrial waste gas comprising CO2;

    b) producing from the synthetic carbonatesi) a first material comprising a supplementary cementitious material comprising carbonates, bicarbonates, or a combination thereof, wherein the supplementary cementitious material reacts with a hydraulic cement composition, and additionallyii) a second material comprising a concrete component comprising carbonates, bicarbonates, or a combination thereof selected from the group consisting of cement, aggregate, and pozzolanic material; and

    c) incorporating the supplementary cementitious material into a concrete composition.

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