Coats hydrocarbon adapts to integrate a device for heat exchanger

The present invention relates to hot or warm hydrocarbon coated comprising a granular fraction and a hydrocarbon binder, characterized in that the elements of the granular fraction have dimensions of between 0 mm and 10 mm, and in that the bituminous binder comprises a workability additive having a melting temperature at 60 ° C and less than 130 ° C, said hydrocarbon being coated resistant to rutting, compact and handy, with a workability, measured with a workability Nynas to the processing temperature in work hydrocarbon coated less than 350N and insulator with a thermal conductivity λ of less than 1 W / mK also relates to a roadway covering, in particular comprising an integration layer based hydrocarbon coated pipes comprising a device for heat exchanger. It also relates to a process for preparing such a coating roads.