Asphalt-based formulations and method of making and using the same for paving and coating applications

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.

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.

A cationic asphalt-based formulation, comprising

• water;
• 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.

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.

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.