In order to improve the maintenance efficiency of asphalt pavement of national and provincial trunk highways and promote environ-mental sustainability,this paper mainly studies the application of geothermal regeneration technology in asphalt pavement maintenance.The re-sults show that the average rut depth of the mixture is only 12 mm after 1 000 cycles of loading.In the water stability test,the average failure strength of the mixture reached 2.5 MPa.In the low temperature bending test,the mixture shows good toughness and crack resistance.The av-erage bending stress at fracture is 3.4 MPa,and the average bending strain is 490 με.It has strong crack resistance at low temperature.
National and provincial trunk roadsAsphalt pavementMaintenance technologyGeothermal regeneration
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