Abstract: Disclosed is a medium set cationic bituminous emulsion comprising, relative to the emulsion:a. about 40 to 75% by weight asphalt;b. 0.25 to 5% by weight of a cationic emulsifier;c. 0.1 to 0.5% by weight of a nonionic water-soluble thickening agent;d. 0 to 8% of a low-boiling hydrocarbon; ande. water as a continuous phase of said emulsion to make up 100% by weight;wherein said medium set emulsion when combined with open-graded aggregate produces a mix which has a thick coating of emulsion on said aggregate surface and said mix is workable and results in minimum runoff.

Abstract: Disclosed is a cationic bituminous emulsion comprising relative to the emulsion about 40 to 70% by weight asphalt, 0.25 to 5% by weight of a cationic emulsifier, 0.1-0.5% by weight of a water-soluble thickening agent, 0-8% of a low-boiling hydrocarbon, and water as a continuous phase of said emulsion to make up 100% by weight. The emulsion is particularly useful for open-graded roads.

Abstract: The treatment of pavement surfaces with a rapid setting high float asphalt emulsion which comprises 50 to 75 weight percent asphalt, about 0.01 to 1.0 weight percent anionic emulsifier, about 0.2 to 15 weight percent carboxylic acid esters, sufficient base to provide said emulsion with a pH greater than about 9, and water.