CPC C04B 7/12 (2013.01) [C04B 7/02 (2013.01); C04B 7/51 (2013.01); C04B 12/005 (2013.01); C04B 12/04 (2013.01); C04B 14/04 (2013.01); C04B 14/14 (2013.01); C04B 18/02 (2013.01); C04B 28/02 (2013.01); C04B 28/04 (2013.01); C04B 28/18 (2013.01); C04B 2103/009 (2013.01); C04B 2201/50 (2013.01)] | 20 Claims |
1. A cementitious material comprising:
a natural pozzolan selected from hyaloclastite, sideromelane, tachylite or combinations or mixtures thereof, wherein the natural pozzolan has a volume-based mean particle size of less than or equal to approximately 40 μm; and
an aqueous alkaline activating solution suitable for forming a geopolymer, wherein the aqueous alkaline activating solution comprises:
a hydroxide; and
a water-soluble alkali metal silicate.
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