Volume-stable hardened hydraulic cement
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United States of America Patent
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-
Aug 9, 1988
Issued Date -
N/A
app pub date -
Mar 24, 1987
filing date -
Mar 25, 1986
priority date (Note) -
Expired
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Abstract
The hardened volume change of concrete, grout, patching material, and water-proof material made from blends of Calcium Sulfate Hemihydrate, Portland Cement and Calcium Aluminate Cement can be reduced by using Portland Cement containing low levels of iron oxide. By lowering the normal level of iron oxide in the Portland Cement used in the above composition, it was also discovered that the compressive strengths dramatically increase as well as the bond to old concrete.
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