Process for placing cement composition having high strength
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United States of America Patent
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-
Apr 29, 1986
Grant Date -
N/A
app pub date -
Jul 10, 1984
filing date -
Jul 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for placing a cement composition having high strength is provided. The process comprises the steps of adding a viscosity increasing agent, vacuum de-bubbling under reduced pressure and allowing the de-bubbled cement composition to be hardened. At the vacuum de-bubbling step, relatively large foams present in the cement composition are removed and only fine bubbles are left in the composition. The strength of the cement composition is remarkably improved by the removal of large bubbles.
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