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US 12,729,158 B2Granted
Crystalline cellulose reinforced cement
OwnerSean Mcalpine, Jory Nakoneshny +1inventors
InventorsSean Mcalpine, Jory Nakoneshny, Blaine Kunkel
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Abstract
A cementitious composition comprises cement and crystalline cellulose or nanocrystalline cellulose formed from a cellulosic material by a redox reaction.
Claims17
A cement composition comprising cement and substantially pure cellulose nanocrystals (CNCs) formed by a redox reaction and having a carboxyl content of about 152 mmol/kg or less.
A cement composition comprising cement and crystalline cellulose which has been treated with an alkaline solution to reduce its carboxyl content to about 152 mmol/kg or less.
A method of forming a cement composition, comprising the steps of:
- (a) producing crystalline cellulose nanocrystals (CNCs), having a carboxyl content of about 152 mmol/kg or less, by oxidizing a cellulosic material;
- and
- (b) mixing the CNCs with cement.
Dependencies are inferred from the claim text.