Cement compositions
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United States of America Patent
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-
Nov 6, 1984
Grant Date -
N/A
app pub date -
Jun 3, 1983
filing date -
Jun 24, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cement composition which when mixed with water hydrates to form a hardened cement containing ettringite comprises a high alumina cement, beta-anhydrite and calcium oxide and/or calcium hydroxide. The composition may also contain a calcium sulphate which is partially water soluble, an alkali metal sulphate, an accelerator for the high alumina cement such as lithium carbonate, and/or a bentonite clay. The composition is particularly suitable for filling cavities in mines.
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