A process for manufacturing a road pavement comprising on its surface pipes of a heat exchanger device, characterized in that it comprises the following steps: a) spreading at a temperature below 160°C of asphalt mixes comprising a granular fraction, a hydrocarbon binder, to form an embedding layer, said asphalt mixes being workable, having a workability, measured according to standard 98-258-1 of 2013, with a Nynas workability meter at the working temperature of the asphalt mixes, of less than 400 N, then b) depositing pipes on this embedding layer, said pipes being made of polymer, having a crushing strength greater than 3000 N per linear meter of pipe at 100°C, a thermal expansion coefficient less than 200.10 -6 K -1 at 20°C so as to allow their indentation even in the absence of cooling means or pressurizing means; the crushing strength of the pipes being determined according to the following protocol: - cut a sample of pipe, with a length comprised between 5 cm and 10 cm, - then place this sample for 2 hours in an oven at a temperature of 100°C, - position the sample on its generator between the two parallel plates of a press, placed in a climatic chamber set to 100°C, - impose on the sample a displacement of 10 mm/min via the press, - determine the crushing strength value when the diameter of the sample is halved from the original diameter of the sample, - express the crushing strength in newtons per linear meter of pipe using the relation: Rt = Ft / Lt with with: • Rt: crushing strength of the pipe in N/m • Ft: force developed to crush the pipe to half its diameter in N • Lt: length of the sample subjected to the test in mm, then c) indentation of the pipes deposited in said embedding layer by compacting said mixes during the workability period of said mixes, to form an embedding layer comprising pipes of the heat exchanger device, then d) application over a surface layer for road surfacing, in particular a wearing course. a) spreading at a temperature below 160°C of asphalt mixes comprising a granular fraction, a hydrocarbon binder, to form an embedding layer, said asphalt mixes being workable, having a workability, measured according to standard 98-258-1 of 2013, with a Nynas workability meter at the working temperature of the asphalt mixes, of less than 400 N, then b) depositing pipes on this embedding layer, said pipes being made of polymer, having a crushing strength greater than 3000 N per linear meter of pipe at 100°C, a thermal expansion coefficient less than 200.10 -6 K -1 at 20°C so as to allow their indentation even in the absence of cooling means or pressurizing means; the crushing strength of the pipes being determined according to the following protocol: - cut a sample of pipe, with a length comprised between 5 cm and 10 cm, - then place this sample for 2 hours in an oven at a temperature of 100°C, - position the sample on its generator between the two parallel plates of a press, placed in a climatic chamber set to 100°C, - impose on the sample a displacement of 10 mm/min via the press, - determine the crushing strength value when the diameter of the sample is halved from the original diameter of the sample, - express the crushing strength in newtons per linear meter of pipe using the relation: Rt = Ft / Lt with with: • Rt: crushing strength of the pipe in N/m • Ft: force developed to crush the pipe to half its diameter in N • Lt: length of the sample subjected to the test in mm, then - cut a sample of pipe, with a length comprised between 5 cm and 10 cm, - then place this sample for 2 hours in an oven at a temperature of 100°C, - position the sample on its generator between the two parallel plates of a press, placed in a climatic chamber set to 100°C, - impose on the sample a displacement of 10 mm/min via the press, - determine the crushing strength value when the diameter of the sample is halved from the original diameter of the sample, - express the crushing strength in newtons per linear meter of pipe using the relation: Rt = Ft / Lt with with: • Rt: crushing strength of the pipe in N/m • Ft: force developed to crush the pipe to half its diameter in N • Lt: length of the sample subjected to the test in mm, then • Rt: crushing strength of the pipe in N/m • Ft: force developed to crush the pipe to half its diameter in N • Lt: length of the sample subjected to the test in mm, then c) indentation of the pipes deposited in said embedding layer by compacting said mixes during the workability period of said mixes, to form an embedding layer comprising pipes of the heat exchanger device, then d) application over a surface layer for road surfacing, in particular a wearing course.