Composition and method for forming a sprayable materials cover
First Claim
1. A bulk material cover, which comprises:
- (a) about 30 to about 70 weight percent liquid;
(b) about 5 to about 60 weight percent cementitious material;
(c) about 0.1 to 5% water-dispersible polymer;
(d) up to about 60 weight percent inert filler; and
(e) up to about 20 weight percent fiber, wherein the indicated weight percents are based on total weight of the material.
1 Assignment
0 Petitions
Accused Products
Abstract
An alternative cover for landfill may be formed from a slurry mixture of water, cementitious binder, adhesion enhancing admixture and fiber. These constituents may be mixed and applied to cover landfilled wastes, granular material piles or for soil erosion control. The cover will harden to minimize water infiltration, wind blown dust, odor and affinity to birds, flies and other insects. The water may include tap water, landfill leachate and wastewater. The binder may include Portland cement, blended cement, cement kiln dust, class C fly ash, and/or calcium sulphate hemihydrate. The adhesion enhancing admixture includes water-dispersible polymers. The fibers may comprise shredded paper or wood or plastic fibers.
-
Citations
29 Claims
-
1. A bulk material cover, which comprises:
-
(a) about 30 to about 70 weight percent liquid;
(b) about 5 to about 60 weight percent cementitious material;
(c) about 0.1 to 5% water-dispersible polymer;
(d) up to about 60 weight percent inert filler; and
(e) up to about 20 weight percent fiber, wherein the indicated weight percents are based on total weight of the material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of spray applying a cover for bulk material, comprising:
-
forming a pumpable slurry comprising;
(a) about 30 to about 70 weight percent liquid;
(b) about 5 to about 60 weight percent cementitious material;
(c) about 0.1 to 5% water-dispersible polymers;
(d) up to about 60 weight percent inert filler; and
(e) up to about 20 weight percent fiber, wherein the indicated weight percents are based on total weight of the material;
conveying said pumpable slurry to a spray applicator; and
spraying said slurry over said bulk material. - View Dependent Claims (14, 15, 16, 17)
-
- 18. A dry mixture adapted to be spray applied to bulk material, said dry mixture comprising a cementitious material and a filler, said dry composition, when mixed with a liquid including latex, providing a pumpable slurry capable of spray application to bulk material and which, after spray application is adherent to said bulk material in the slurried state and after setting.
- 24. A dry mixture adapted to be spray applied to bulk material, said dry mixture comprising a cementitious material, a redispersible polymer and a filler, said dry composition, when mixed with liquid, providing a pumpable slurry capable of spray application to bulk material and which, after spray application is adherent to said bulk material in the slurried state and after setting.
Specification