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US 6,475,275 B1Granted
Cement composition
AssigneeIsolatek International
InventorsEdward Nebesnak, Robert Ostertog
Life of this patent
Estimating the term…
Abstract
A cement composition contains 35-85% by weight of a cement, 3-15% by weight of a clay, 1-50% by weight of an aggregate and/or a fibrous material, and 0.2-5% by weight of a high efficiency retarder. A benefit of the present invention is that equipment used to apply cement compositions need not be cleaned every night when used on a construction site.
Claims18
A cement composition, comprising:
- (a) 35-85% by weight of a cement,
- (b) 3-15% by weight of a swellable clay,
- (c) 1-50% by weight of at least one member selected from the group consisting of an aggregate and a fibrous material, and
- (d) 0.7-1.0% by weight of a high efficiency retarder.
1 more element
A cement composition, comprising:
- (a) 35-85% by weight of a cement,
- (b) 3-15% by weight of a swellable clay,
- (c) 1-50% by weight of at least one member selected from the group consisting of an aggregate and a fibrous material, and
- (d) a retarder, in an amount sufficient to prevent the cement composition, when mixed with water, from setting for 12 hours to one week.
1 more element
A method of making a cement composition, comprising mixing together at least the following ingredients:
- (a) 35-85% by weight of a cement,
- (b) 3-15% by weight of a swellable clay,
- (c) 1-50% by weight of at least one member selected from the group consisting of an aggregate and a fibrous material, and
- (d) 0.7-1.0% by weight of a high efficiency retarder.
1 more element
Dependencies are inferred from the claim text.