Synthetic class C fly ash and use thereof as partial cement replacement in general purpose concrete
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United States of America Patent
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Feb 12, 1991
Grant Date -
N/A
app pub date -
Aug 8, 1988
filing date -
Aug 8, 1988
priority date (Note) -
Expired
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Abstract
A synthetic Class C fly ash results from a substantially homogeneous blend of about 40-60% by weight of a Class F fly ash and about 60-40% by weight of cement kiln dust (CKD). This new fly ash can replace about 25-50% by weight of portland cement in conventional formulations with coarse and fine aggregate for making general purpose concrete and particularly ready-mix concrete with comparable compressive strength and like properties.
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