US 12,221,380 B2
Pozzolanic compositions containing coal ash and remediation agents for use in cementitious materials
Joseph Earl Thomas, Malad City, ID (US); Richard Douglas Carter, Macon, GA (US); and Jeffrey Alexander Whidden, Brentwood, MO (US)
Assigned to CR Minerals Company, LLC, Fort Worth, TX (US)
Filed by CR Minerals Company, LLC, Fort Worth, TX (US)
Filed on Aug. 31, 2023, as Appl. No. 18/240,407.
Application 18/240,407 is a continuation of application No. 17/158,172, filed on Jan. 26, 2021, granted, now 11,773,018.
Application 17/158,172 is a continuation of application No. 16/877,387, filed on May 18, 2020, granted, now 11,299,424, issued on Apr. 12, 2022.
Application 16/877,387 is a continuation of application No. 16/011,856, filed on Jun. 19, 2018, granted, now 10,689,292, issued on Jun. 23, 2020.
Application 16/011,856 is a continuation of application No. 15/439,572, filed on Feb. 22, 2017, granted, now 10,017,418, issued on Jul. 10, 2018.
Application 15/439,572 is a continuation of application No. 15/199,821, filed on Jun. 30, 2016, granted, now 9,611,174, issued on Apr. 4, 2017.
Application 15/199,821 is a continuation of application No. 14/748,320, filed on Jun. 24, 2015, granted, now 9,561,983, issued on Feb. 17, 2017.
Claims priority of provisional application 62/016,965, filed on Jun. 25, 2014.
Prior Publication US 2023/0416146 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C04B 18/08 (2006.01); C04B 14/14 (2006.01); C04B 18/14 (2006.01); C04B 28/02 (2006.01); C04B 40/00 (2006.01); C04B 111/20 (2006.01); C04B 111/21 (2006.01); C04B 111/26 (2006.01)
CPC C04B 18/088 (2013.01) [C04B 14/14 (2013.01); C04B 18/08 (2013.01); C04B 18/146 (2013.01); C04B 28/02 (2013.01); C04B 40/0039 (2013.01); C04B 2111/2015 (2013.01); C04B 2111/2023 (2013.01); C04B 2111/21 (2013.01); C04B 2111/26 (2013.01); Y02W 30/91 (2015.05)] 9 Claims
 
1. A pozzolanic composition for use in Portland cement-based concrete, said composition comprising coal ash combined with a natural pozzolan, wherein said natural pozzolan is present in a concentration of about 1 wt % to about 99 wt %, wherein said coal ash meets a specification for pozzolanic mixtures, pozzolan admixtures, or supplementary cementitious materials in concrete under ASTM and/or AASHTO, wherein said natural pozzolan meets a specification for pozzolanic mixtures, pozzolan admixtures, or supplementary cementitious materials in concrete under ASTM and/or AASHTO, and wherein said pozzolanic composition meets a specification under ASTM and/or AASHTO for pozzolanic mixtures, pozzolan admixtures, or supplementary cementitious materials in concrete.