Mix in place mixing grade emulsion for asphalt or bitumen applications
View Patent ↗Asphaltic or bitumen emulsions designed for road construction applications. Construction of full depth pavements with emulsions and the related process disclosed herein is now possible at temperatures below about 160° F. to 180° F. by the unique and unexpected combination of emulsifier(s), surfactant(s) and optional break control agent(s), to form mixtures of emulsion plus break control agent and aggregates. The mixtures of emulsion plus break control agent and aggregates are then spread across the paving area. The spread mixture then breaks, sets and otherwise cures to a complete mass or mat suitable for the intended design application.
1. An emulsion mixed with aggregates other than slurry seal aggregate gradations for road, pathway, trail or other transport route construction comprising:
combinations of emulsifiers and water to form an emulsion;
at least one break control agent selected from the group consisting of anionic or cationic chemical moieties, de-foaming agents, wetting agents, adhesion agents, organic acids, mineral acids, organic adjuvants and mineral base adjuvants;
said emulsion and said break control agent combined with aggregates of suitable gradation for road, pathway, trail or transport construction wherein said emulsifiers contain phosphorous to form either an oil-in-water or water-in-oil emulsion;
a hydrocarbon oil containing asphalt or bitumen or other hydrocarbon oils in combination with asphalt; and
water for emulsification of at least about 25% or more of total emulsion weight;
wherein said break control agent is combined with said aggregates at ambient temperature before combining with said hydrocarbon oil and said emulsion at ambient temperature.
2. An emulsion as set forth in claim 1 wherein said hydrocarbon oil further contains adjuvants.
3. The emulsion of claim 2 wherein said adjuvants are fibers, hydrocarbon resins, polymers, chemical moieties containing nitrogen, carboxylic or hydroxyl groups or vinyl carbon-carbon bonds, recycled road materials or recycled shingles.
4. The emulsion of claim 1 wherein the phosphorous is phosphate surfactants of various molecular weights containing moieties selected from the group consisting of ethylene, propylene and butylene.
5. The emulsion of claim 1 wherein said at least one break control agent is a cationic chemical moiety.
6. The emulsion as set forth in claim 1 wherein said aggregates further contain adjuvants.
7. The emulsifiers of claim 1 wherein said phosphorous is phosphate surfactants of various molecular weights.
8. The emulsion of claim 1 wherein the anionic or cationic chemical moieties are organic acids or bases characterized by either amines or carboxylic acids or hydroxides or their combinations that act as break control and/or adhesion moieties.
9. The emulsion of claim 1 wherein the anionic or cationic chemical moieties are inorganic mineral acids or bases.
10. A process to prepare an oil-in-water emulsion mixed with aggregates at ambient temperature for construction or industrial applications, which process comprises the steps of:
selecting a break control agent selected from the group consisting of anionic or cationic chemical moieties, de-foaming agents, wetting agents, adhesion agents, organic acids, mineral acids, organic adjuvants and mineral base adjuvants;
combining the break control agent with aggregate of suitable gradation at ambient temperature; and
thereafter mixing the combined break control agent and aggregate with an oil-in-water emulsion containing phosphorous, hydrocarbon oil, and water at ambient temperature.
11. The process as set forth in claim 10 including the additional optional step of pre-wetting the aggregate with water.
12. A process to prepare a water-in-oil emulsion mixed with aggregate at ambient temperature for construction or industrial applications, which process comprises the steps of:
selecting a break control agent selected from the group consisting of anionic or cationic chemical moieties, de-foaming agents, wetting agents, adhesion agents, organic acids, mineral acids, organic adjuvants and mineral base adjuvants;
combining the break control agent with aggregate of suitable gradation at ambient temperature; and
thereafter mixing the combined break control agent and aggregate with a water-in-oil emulsion containing phosphorous, hydrocarbon oil, and water at ambient temperature.
13. The process as set forth in claim 12 including the additional optional step of pre-wetting the aggregate with water.