Study on PQI standard for comprehensive maintenance of asphalt pavement based on full-cycle
Mingyang Gong, Haitao Zhang, Zuoqiang Liu, Xinxin Fu
Abstract
Reasonable establishment of maintenance prediction mechanism plays an important role in service performance and long-term performance of asphalt pavement. The presented study proposed a comprehensive maintenance evaluation system framework of asphalt pavement based on the full-cycle. Firstly, Pavement maintenance cycle was divided into five stages and three important maintenance opportunities. Secondly, according to the theoretical formula method, the single index of pavement maintenance was studied, and the relationship between single index and service life was established. Combined with the empirical formula method and the measured data method, the evaluation standard of the full-cycle asphalt pavement comprehensive maintenance system was determined. Finally, based on the background of Har-tong expressway, the evaluation standard of comprehensive maintenance system in Heilongjiang Province of China under different maintenance periods was established. The results showed that the full-cycle comprehensive maintenance evaluation system can effectively predict the key nodes of asphalt pavement maintenance. In addition, the relevant maintenance standards can be formulated according to the driving data of different regions, which is helpful to establish an accurate maintenance evaluation system. This is conducive to saving maintenance resources, improving maintenance efficiency, and providing reference for future pavement maintenance construction.