Activitation of natural pozzolans

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United States of America Patent

PATENT NO 11655186
APP PUB NO 20200123054A1
SERIAL NO

16241994

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An activated pozzolan composition includes a fine interground particulate blend of an initially unactivated natural pozzolan and a supplementary cementitious material (SCM) different than the initially unactivated natural pozzolan. The initially unactivated natural pozzolan may include volcanic ash or other natural pozzolanic deposit having a moisture content of at least 3%, and the activated pozzolan composition can have a moisture content less than 0.5% The initially unactivated natural pozzolan may have a particle size less than 1 mm before intergrinding with the SCM. The SCM used to activate the initially unactivated natural pozzolan can be initially coarse or granular with a size greater than 1-3 μm and may include granulated blast furnace slag, steel slag, other metallurgical slag, pumice, limestone, fine aggregate, shale, tuff, trass, geologic material, waste glass, glass shards, basalt, sinters, ceramics, recycled bricks, recycled concrete, refractory materials, other waste industrial products, sand, or natural mineral.

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Patent Owner(s)

Patent OwnerAddress
ROMAN CEMENT LLC1475 PRINCETON AVENUE SALT LAKE CITY UT 84105

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guynn, John M Salt Lake City, US 44 547

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