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US 5,181,961 AGranted
Cement composition
AssigneesNihon Cement Co., Ltd., Sanyo Chemical Industries, Ltd.
InventorsYasuhide Umaki, Rokuro Tomita, Fumiaki Hondo, Shigeru Okada
Life of this patent
Estimating the term…
Abstract
A low shrinkage cement composition containing at least one compound having the formula: ROH wherein R is an alkyl group having about 4 to 6 carbon atoms or a cycloalkyl group having about 5 to 6 carbon atoms.
Claims6
A low shrinkage cement composition, comprising cement, from about 0.5 to 10 wt. %, based on the weight of cement, of at least one compound having the formula:
- ROH
- wherein R is an alkyl group having about 4 to 6 carbon atoms or a cycloalkyl group having about 5 to 6 carbon atoms, from about 0.05 to 5 wt. %, based on the weight of cement, of a water-reducing agent and water in an amount sufficient to effect hydration.
Dependencies are inferred from the claim text.