Study On Microscopic Structure Analysis And Performance Of Domestic-Natural Shale Asphalt

With the rapid development of highway, transportation industry has also made big progress, currently China’s highway traffic mileage has exceeded40,000km. For the good performance of driving comfortable, easy maintenance and so on, more than95percent of them are asphalt pavements. With the continuous increase of our traffic deadweight, we have to greatly improve the carrying capacity, but currently part of the inland highway shows some damage of rutting,cracks and so on.In order to eliminate the highway rutting damage.natural asphalt becomes more and more widely used in the road construction, for example Trinida Lake Asphalt,North America Shale, Tsingchuan Shale and so on, they all improve the pavement performance during the actual using process. The actual use of the process of high-temperature asphalt pavement road performance has improved. The using methods can be divided into two kinds, such as wet method and dry method, the wet method use natural asphalt as modifier of base asphalt, while the dry method use it as the additive of asphalt mixture during the process of production. This paper mainly focuses on the shale additive produced in China’s Sichuan province and its wet modification process. This shale additive belongs to the kind of Asphatite natural asphalt, with high asphaltene content, high purity, high softening point and good miscibility in the base asphalt.Using electron microscopy and other shimmer experimental techniques.the subject carried out microscopic analysis of domestic natural shale additive,we choose the Donghai70as base asphalt,and different dosage of domestic natural shale additive to verify asphalt ratio experiment, anti-rutting performance, water stability of asphalt mixture and so on.