System for repairing bituminous wearing courses
AssigneeAsphalt Systems International Limited
InventorsJonathan Luke Henry Goodhart, Christopher Paul James Wightman, Gary Alma Porritt
Life of this patent
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Abstract
A method for repairing a damaged area of a bitutinous wearing course. The method comprises heating the damaged area, applying a liquid to the damaged area that rejuvenates damaged bitumen, adding new material to the damaged area in an amount required to level the area, and compacting the new material. The invention also provides a new composition for rejuvenating damaged bitumen. The composition may comprise an emulsifier, a heavy paraffinic distillate solvent extract, a heavy naphthenic distillate solvent extract and water.
Claims24
A bitumen rejuvenating liquid composition for rejuvenating a damaged area of a bituminous wearing course, said composition being resistant to breakdown at temperatures of up to 200° C. and essentially consisting of a cationic slow set emulsifier, a heavy paraffinic distillate solvent extract, a heavy naphthenic distillate solvent extract and water.
In a method of repairing a damaged area of a bituminous wearing course including:
- heating the damaged area with an infrared heater;
- raking the heated damaged area so as to mix highly oxidised top surface material of the damaged area with less oxidised substrata;
- applying a bitumen rejuvenating liquid composition to the raked heated damaged area;
- adding new bituminous material to the rejuvenated raked heated damaged area;
- and
- compacting the new bituminous material to provide a compacted repaired area of bituminous wearing course:
- the improvement which comprises:
- said bitumen rejuvenating liquid composition being resistant to breakdown at temperatures of up to 200° C. and consisting essentially of a cationic slow set emulsifier, a heavy paraffinic distillate solvent extract, a heavy naphthenic distillate solvent extract and water.
In a method of repairing a damaged area of a bituminous wearing course including:
- heating the damaged area with an infrared heater;
- raking the heated damaged area so as to mix highly oxidised top surface material of the damaged area with less oxidised substrata;
- applying a bitumen rejuvenating liquid composition to the raked heated damaged area;
- adding new bituminous material to the rejuvenated raked heated damaged area;
- and
- compacting the new bituminous material to provide a compacted repaired area of bituminous wearing course:
- the improvement which comprises:
- said bitumen rejuvenating liquid composition being resistant to breakdown at temperatures of up to 200° C. and consisting essentially of a cationic slow set emulsifier, a heavy paraffinic distillate solvent extract, a heavy naphthenic distillate solvent extract, a naturally occurring mineral asphalt and water.
A bitumen rejuvenating liquid composition for rejuvenating a damaged area of a bituminous wearing course, said composition being resistant to breakdown at temperatures of up to 200° C. and essentially consisting of a cationic slow set emulsifier, a heavy paraffinic distillate solvent extract, a heavy naphthenic distillate solvent extract, a naturally occurring mineral asphalt and water.
Dependencies are inferred from the claim text.