| 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 |
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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.
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