Study on Application of in situ hot recycling technology of old asphalt pavement in urban road

With the continuous development of cities in China, the requirements of road construction are higher and higher. For asphalt pavement, in order to better extend the service life of asphalt pavement after a long time of use, the geothermal recycling technology will be applied, which can better improve the quality of asphalt pavement and prolong the service life of asphalt pavement. At the same time, through the effective use of old asphalt, it can protect the surrounding environment, reduce the demand for new paving materials, and alleviate the shortage of building materials supply to a certain extent. In this paper, we first understand a project and its construction scheme, and then explain the application measures of geothermal recycling technology for old asphalt pavement, providing reference for relevant researchers.