BITUMINOUS COATINGS BASED ON RECYCLED COAT STONES AND ROAD STRUCTURES MADE THEREFROM

摘要

The aim of the invention is to provide a new bituminous mix comprising asphalt aggregates (AE) and a rejuvenation adjuvant, this adjuvant allowing a remobilization of the recycled bitumen such that the asphalt is closer to or even equal to the technical characteristics. asphalt mixes based on new bitumen. To do this, the mix is characterized in that the adjuvant comprises: • a mixture comprising a. 5 to 30% by weight of tall oil free fatty acids, preferably 10 to 25%, b. 1 to 35% by weight of esterified tall oil fatty acids, preferably 5 to 30%, c. 10 to 30% by weight of resin acids, preferably 15 to 25%, optionally one or more product (s) chosen from: polymers, binders, fluxing agents, driers, hydrated lime, spreading and adhesion agents and mixtures thereof, and optionally water, said adjuvant representing, in dry matter, at least 10% by weight of the bitumen contained in the AEs, preferably at least 20%. The subject of the invention is also the process for obtaining the mix, the rejuvination adjunct itself, a bituminous binder comprising such an adjuvant, the use of the adjuvant in a bituminous mix composition, and a method for producing a road structure implementing the bituminous mix.