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An asphalt-based, cold paving/coating formulation that provides increased flexibility with respect to the choice of aggregate types, asphalt emulsion types, type and amount of the surfactants used to produce the asphalt emulsion, asphalt emulsion pH's and application temperature's than conventional

An asphalt-based, cold paving/coating formulation that provides increased flexibility with respect to the choice of aggregate types, asphalt emulsion types, type and amount of the surfactants used to produce the asphalt emulsion, asphalt emulsion pH's and application temperature's than conventional cold paving/coating formulations while providing good mix times and curing behavior. The asphalt-based formulation can be formed by mixing water; an asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts, and ammonium hydroxide; at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts, and nickel salts; and optionally aggregate. Also, a method of preparing an asphalt-based formulation using these components.

대표청구항 ▼

1. A cationic asphalt-based formulation formed by mixing:water; a cationic asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts and ammonium hydroxide; and at least one second compound in a

1. A cationic asphalt-based formulation formed by mixing:water; a cationic asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts and ammonium hydroxide; and at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts and nickel salts. 2. The formulation according to claim 1 further comprising aggregate.3. The formulation according to claim 1, wherein the water is mixed in an amount of from about 4 to about 16 parts by weight the cationic asphalt emulsion is mixed in an amount from about 8 to about 25 parts by weight, the at least one first compound is mixed in an amount from greater than 0 to about 4 pans by weight, and the at least one second compound is mixed in an amount from greater than 0 to about 2 parts by weight.4. The formulation according to claim 2, wherein said aggregate is mixed in an amount of 100 parts by weight, the water is mixed in an amount of from about 4 to about 16 parts by weight, the cationic asphalt emulsion is mixed in an amount from about 8 to about 25 parts by weight, the at least one first compound is mixed in an amount from greater than 0 to about 4 parts by weight, and the at least one second compound is mixed in an amount from greater than 0 to about 2 parts by weight.5. The formulation according to claim 1, wherein the water is mixed in an amount of from about 8 to about 15 parts by weight, the cationic asphalt emulsion is mixed in an amount from about 10 to about 15 parts by weight, the at least one first compound is mixed in an amount from about 0.005 to about 3 pans by weight, and the at least one second compound is mixed in an amount from about 0.001 to about 1 part by weight.6. The formulation according to claim 1, wherein the at least one first compound in aqueous solution comprises more than one first compound provided in one or more aqueous solutions.7. The formulation according to claim 1, wherein the at least one second compound in aqueous solution comprises more than one second compound provided in one or more aqueous solutions.8. The formulation according to claim 1, wherein the at least one first compound and the at least one second compound have solubilities in water at 20 C. of 10 g/100 mL.9. The formulation according to claim 1, wherein the at least one first compound comprises at least one compound selected from the group consisting of salts and hydroxides of sodium, potassium and ammonium.10. The formulation according to claim 9, wherein the at least one first compound comprises at least one compound selected from the group consisting of hydroxides, sulfites, carbonates, silicates, phosphates, phosphites, borates, fluorides, sulfites, oxalates and citrates of sodium, potassium and ammonium.11. The formulation according to claim 1, wherein said at least one first compound includes sodium hydroxide.12. The formulation according to claim 1, wherein said at least one second compound includes at least one compound selected from the group consisting of chlorides, sulfates and nitrates of Group IIA elements, Group IIIA elements, Group IIIB elements, copper, zinc, cadmium, manganese, iron, cobalt and nickel.13. The formulation according to claim 1, wherein said at least one second compound includes at least one compound selected from the group consisting of calcium salts, magnesium salts and aluminum salts.14. The formulation according to claim 1, wherein said at least one second compound includes at least one compound selected from the group consisting of calcium chloride, calcium nitrate, magnesium chloride, magnesium nitrate, magnesium sulfate, aluminum chloride, aluminum nitrate, and aluminum sulfate.15. The formulation according to claim 1, wherein the at least one second compound includes calcium chloride.16. The formulation according to claim 1, wherein the at least one first salt includes a sodium salt or hydroxide and said at least one second compound includes a calcium salt.17. The formulation according to claim 1, wherein the at least one first compound and the at least one second compound are substantially free of Portland cement and lime.18. The formulation according to claim 1, wherein the at least one first compound and the at least one second compound react to produce at least one third compound selected from the group of salts and hydroxides of Group IIA elements, Group IIIA elements, Group IIIB elements, copper, zinc, cadmium, manganese, iron, cobalt and nickel, said at least one third compound having a solubility in water at 20 C. of 0.5 g/100 mL.19. The formulation according to claim 1, wherein the at least one second compound includes at least one second compound included in the aqueous phase of the cationic asphalt emulsion.20. The formulation according to claim 1, wherein the formulation has a pH of at least 9.21. The formulation according to claim 1, wherein said cationic asphalt emulsion is a polymer modified cationic asphalt emulsion.22. The formulation according to claim 21, wherein said polymer modified cationic asphalt emulsion includes at least one polymer selected from the group consisting of cationic SBR latices, natural rubber latices, polychloroprene latices, SBS block copolymers and EVA copolymers.23. The formulation according to claim 21, wherein said polymer modified cationic asphalt emulsion includes a cationic SBR latex emulsion.24. The formulation according to claim 1, wherein the cationic asphalt emulsion has a pH of greater than 1.5 prior to mixing.25. The formulation according to claim 1, wherein the cationic asphalt emulsion has a pH of greater than 2.0 prior to mixing.26. The formulation according to claim 1, wherein the cationic asphalt emulsion has a pH of greater than 3.0 prior to mixing.27. A cationic asphalt-based formulation formed by mixing:water; a cationic asphalt emulsion; at least one compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts and ammonium hydroxide, said at least one compound having a solubility in water at 20° C. of 10 g/100 mL and capable of producing a pH in solution of at least; and at least one salt in aqueous solution having a solubility of 10 g/100 mL; wherein the at least one compound and the at least one salt react to form at least one salt or hydroxide haying a solubility in water at 20° C. of ?0.5 g/100 mL. 28. The cationic asphalt-based formulation according to claim 27 further comprising aggregate.29. The cationic asphalt-based formulation according to claim 27, wherein the at least one salt is selected from the group consisting of salts of Group IIA elements, Group IIIA elements, Group IIIB elements, copper, zinc, cadmium, manganese, iron, cobalt and nickel; and the at least one compound and the at least one salt react to form at least one compound selected from the group consisting of salts and hydroxides of Group IIA elements, Group IIIA elements, Group IIIB elements, copper, zinc, cadmium, manganese, iron, cobalt and nickel, having a solubility in water at 20° C. of ?0.5 g/100 mL.30. A cationic asphalt-based formulation formed by mixing:from about 4 to about 16 parts by weight water; from about 8 to about 25 parts by weight of a cationic asphalt emulsion; from greater than 0 to about 4 parts by weight of at least one first compound in aqueous solution selected from the group consisting salts and hydroxides of sodium, potassium and ammonium; and from greater than 0 to about 2 parts by weight of at least one second compound in aqueous solution selected from the group consisting of calcium chloride, calcium nitrate, magnesium chloride, magnesium nitrate, magnesium sulfate, aluminum chloride, aluminum nitrate, and aluminum sulfate; said cationic asphalt-based formulation having a pH of ?9. 31. The cationic asphalt-based formulation according to claim 30 further comprising aggregate.32. A cationic asphalt-based formulation, comprisingwater; cationic asphalt dispersed in the water; at least one first compound selected from the group consisting of salts and hydroxides of alkali metals and ammonium, said at least one first compound including at least one alkali metal salt or ammonium salt product formed by the reaction of a first react having a solubility in water at 20° C. of ?10 g/100 mL selected from the group consisting of salts and hydroxides of alkali metals and ammonium and a second reactant selected from the group consisting of salts having a solubility in water at 20° C. of ?than about 10 g/100 mL; and at least one second compound formed by the reaction of said first reactant and said second reactant, said at least one compound selected from the group consisting of salts and hydroxides having a solubility in water at 20° C. of ?0.5 g/100 mL; said formulation having a pH of at least 9. 33. The cationic asphalt-based formulation according to claim 32 further comprising aggregate.34. A method of preparing a cationic asphalt-based formulation, comprising mixing water; a cationic asphalt emulsion; at least one first compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts and ammonium hydroxide; and at least one second compound in aqueous solution selected from the group consisting of Group IIA salts, Group IIIA salts, Group IIIB salts, copper salts, zinc salts, cadmium salts, manganese salts, iron salts, cobalt salts and nickel salts, to produce the cationic asphalt-based formulation.35. The method according to claim 34 further comprising mixing aggregate.36. A method of preparing a cationic asphalt-based formulation, comprising mixing:water; a cationic asphalt emulsion; at least one compound in aqueous solution selected from the group consisting of alkali metal salts, alkali metal hydroxides, ammonium salts and ammonium hydroxide, said at least one compound having a solubility of greater than 10 g/100 mL and capable of producing a pH in solution of at least 9; and at least one salt in aqueous solution having a solubility in water at 20° C. of ?10 g/100 mL; wherein the at least one compound and the at least one salt react to form at least one salt or hydroxide having a solubility in water at 20° C. of ?0.5 g/100 mL. 37. The method according to claim 36 further comprising mixing aggregate.38. The method according to claim 36, wherein the at least one salt is selected from the group consisting of salts of Group IIA elements, Group IIIA elements, Group IIIB elements, copper, zinc, cadmium, manganese, iron, cobalt and nickel; and the at least one compound and the at least one salt react to form at least one compound having a solubility in water at 20° C. ?0.5 g/100 mL selected from the group consisting of salts and hydroxides of Group IIA elements, Group IIIA elements, Group IIIB elements, copper, zinc cadmium, manganese, iron, cobalt and nickel.39. A method of preparing a cationic asphalt-based formulation, comprised mixing:from about 4 to about 16 parts by weight water; from about 8 to about 16 parts by weight of an cationic asphalt emulsion; from greater than 0 to about 4 parts by weight of at least one first compound in aqueous solution selected from the group consisting salts and hydroxides of sodium, potassium and ammonium; and from greater than 0 to about 2 parts by weight of at least one second compound in an aqueous solution selected from the group consisting of calcium chloride, calcium nitrate, magnesium chloride, magnesium nitrate, magnesium sulfate, aluminum chloride, aluminum nitrate, and aluminum sulfate; said cationic asphalt-based formulation having a sufficient amount of the at least one first compound to produce a pH of ?9. 40. The method according to claim 39 further comprising mixing 100 parts by weight aggregate.