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US 12,679,769 B2Granted
Rejuvenating compounds in high performance asphalt compositions with high recycled content
AssigneeCargill, Incorporated
InventorsTodd Kurth, Scott Nivens, Christopher Stevermer, Anthony Joseph Sylvester, Hassan Tabatabaee
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Abstract
Described herein is a rejuvenated asphalt and a method of rejuvenating asphalt comprising mixing a rejuvenator, bitumen, and aggregate to obtain an asphalt mixture, wherein the rejuvenator is present in an amount ranging from about 0.1-40 wt % by weight of the bitumen, and wherein at least 35 wt % of the bitumen is derived from recycled asphalt content. The rejuvenated asphalt provides desirable performance.
Claims20
A method, comprising:
- mixing a rejuvenator, bitumen, and aggregate to obtain an asphalt mixture;
- wherein the rejuvenator is a polymerized oil that is polymerized via sulfurization, the rejuvenator is 0.1 wt % to 40 wt % of the bitumen, and the rejuvenator is 0.1 wt % to 30 wt % of the asphalt mixture,
- wherein at least 35 wt % of the bitumen is derived from recycled asphalt content, and
- wherein the asphalt mixture achieves less than 12.5 mm of rutting as determined by Hamburg Wheeltracker test standard in accordance with AASTHO T 324.
1 more element
A rejuvenated asphalt, comprising:
- a rejuvenator, bitumen, and aggregate;
- wherein the rejuvenator is a polymerized oil that is polymerized via sulfurization, the rejuvenator is 0.1 wt % to 40 wt % by weight of the bitumen, and the rejuvenator is 0.1 wt % to 30 wt % of the asphalt mixture,
- wherein at least 35 wt % of the bitumen is derived from recycled asphalt content, and
- wherein the rejuvenated asphalt achieves less than 12.5 mm of rutting as determined by Hamburg Wheeltracker test standard in accordance with AASTHO T 324.
1 more element
Dependencies are inferred from the claim text.