Research on the Design of Long-life Asphalt Pavement in Desert
In order to extend the service life of asphalt pavement,taking the Zhongwei section of the Wuhai-Maqin Expressway as an example,a survey is conducted on the climate,environmental characteristics,and pavement conditions in the desert area of Ningxia.Based on the experimental asphalt pavement structure in the desert area of Ningxia,a calculation and analysis are conducted to find the most suitable asphalt pavement structure for use in the desert area of Ningxia.The research results indicate that:firstly,the main types of asphalt pavement diseases in the northern region and central region of Ningxia are cracks,with some pavements having depressions and local network cracks;the main types of asphalt pavement diseases in the southern mountainous areas of Ningxia are cracks and water damage;secondly,the mechanical response of the proposed pavement structures are verified and analyzed,preliminarily confirming the rationality of the experimental asphalt pavement structure;thirdly,by conducting pavement index testing on the on-site test section,and integrating the testing results,calculation simulation analysis,and indoor test results,it is recommended that Structure C and Structure D be the preferred structures for asphalt pavement in the desert area of Ningxia.
desert expresswayasphalt pavement designfinite element simulation
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