Cement compositions containing nano sized boehmite crystallites
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United States of America Patent
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Jun 16, 2015
Grant Date -
Aug 14, 2014
app pub date -
Feb 12, 2014
filing date -
Feb 14, 2013
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Abstract
A composition comprising cement and nano-sized crystalline particles of boehmite alumina or nano-sized crystalline particles of boehmite alumina which have been modified by the inclusion of silicon oxide, calcium oxide, or magnesium oxide. The boehmite alumina has an average crystallite size from about 2 nm to about 80 nm and a content of non-crystalline alumina of less than about 25 mol percent based on total aluminum.
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