With the continuous changes of highway operation time and operation environment, asphalt pavement will appear various diseases in varying degrees, such as cracks, pits, ruts, denudation, water damage, etc. It is of great significance to strengthen the diagnosis of the causes of pavement diseases and the selection of maintenance countermeasures, and improve the maintenance design of asphalt pavement, so as to maintain the good technical condition of the pavement, ensure the overall effectiveness of the road network, and serve the economic and social development and the people's safe and convenient travel.<br>
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