Vegetable-based products of the siccative type for recycling and rejuvenating reclaimed asphalt pavements in situ or in a dedicated plant
AssigneeColas
InventorsChristine Deneuvillers, Roger Hayner, Jean-Paul Fort
Life of this patent
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Abstract
A method for recycling or renovating old pavements, wherein a rejuvenating binder is used including at least one compound based on fatty substances of natural origin including hydrocarbon fatty chains, these fatty substances of natural origin having undergone at least one chemical functionalization reaction through which at least one oxygenated functional group has been introduced. The rejuvenating binders and rejuvenating binder emulsions especially suitable to the method, and asphalt mixes based on regenerated reclaimed asphalt pavement are also disclosed.
Claims22
A method for recycling or renovating old pavements, comprising the step of:
- recycling reclaimed asphalt pavements obtained through milling or crushing said reclaimed asphalt pavements with a rejuvenating binder so as to form a new pavement course,
- wherein the rejuvenating binder comprises by weight of the rejuvenating binder total weight:
- 85% to 100% by weight of at least one compound based on fatty substances of a natural origin and comprising hydrocarbon fatty chains, 5% to 15% by weight of bitumen, and 0% to 10% by weight of additives,
- wherein said at least one compound is an esterified and epoxidized tall oil derivative comprising linear hydrocarbon fatty chains of from 8 to 20 carbons, and
- wherein the rejuvenating binder is used in an anhydrous form or in a form of a rejuvenating binder emulsion.
An asphalt mix for road pavements comprising:
- aggregates;
- a hydrocarbon binder, comprising by weight of the asphalt mix total weight:
- at least 99% by weight of reclaimed asphalt pavements, 0.2 to 1% by weight of a rejuvenating binder comprising by weight of the rejuvenating binder total weight:
- 85% to 100% by weight of at least one compound based on fatty substances of natural origin, 5% to 15% by weight of bitumen, and 0% to 10% by weight of additives, said at least one compound is an esterified and epoxidized tall oil derivative comprising linear hydrocarbon fatty chains of from 8 to 20 carbons;
- and
- additives.
A method for recycling or renovating old pavements, comprising the step of applying directly a rejuvenating binder onto old pavements not having undergone any step of milling or crushing,
- wherein the rejuvenating binder comprises by weight of the rejuvenating binder total weight:
- 85% to 100% by weight of at least one compound based on fatty substances of natural origin, 5% to 15% by weight of bitumen, and 0% to 10% by weight of additives, and
- wherein said at least one compound is an esterified and epoxidized tall oil derivative comprising linear hydrocarbon fatty chains of from 8 to 20 carbons.
Dependencies are inferred from the claim text.