Fly ash composition for use in concrete mix
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United States of America Patent
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-
Nov 19, 2002
Issued Date -
N/A
app pub date -
Jun 25, 2001
filing date -
Jan 28, 2000
priority date (Note) -
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Abstract
A fly ash composition is provided which includes a blend of Class C fly ash, potassium carbonate, and lithium carbonate, which, in combination, reduce alkali silica reactivity when the fly ash composition is used in concrete applications. The fly ash composition includes from about 65 to 99 wt % Class C fly ash, from about 0.1 wt. % to about 4 wt % potassium carbonate, and from about 0.1 wt. % to about 4 wt. % lithium carbonate.
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