Use of alumina clay with cement fly ash mixtures
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United States of America Patent
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Jan 16, 1996
Grant Date -
N/A
app pub date -
Oct 19, 1993
filing date -
Oct 19, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cementitious mixture includes hydraulic cement, fly ash, and an effective amount of unfired nature finely divided material, such as a clay, containing at least about 35% alumina, to accelerate the early strength of a mix. A method of accelerating early strength in a cementitious mix comprises the adding of alumina in the form of an unfired raw material, such as clay, in an effective amount in such mix.
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