Study On Modification Mechanism Of Wuerhe Rock Asphalt

Natural asphalt is a kind of excellent modifier to improve road asphalt, it can effectively improve the performance of road asphalt. Based on the modified asphalt of mechanism on Xinjiang Wuerhe rock asphalt,to further expand its marketing application.In this paper, Tahe crude oil production of "Donghai" brand asphalt, rock asphalt modified using wuerhe rock asphalt, aims to improve the "Donghai" asphalt in eastern Xinjiang, southern and arid area of Northwest High temperature heavy slow traffic road performance.First in the "Donghai" asphalt on wuerhe rock asphalt and asphalt of the road performance in-depth understanding of the basis of different modifying conditions (temperature, mixing time and integration) and asphalt content of different rocks under the modified asphalt road.Performance analysis reveals that a reasonable mixing time and temperature as well as for the rock into the asphalt content.Modified asphalt through the different components of content analysis of performance derived components of change and the relationship between the rock of the wuerhe 90A asphalt to improve the temperature sensitivity of the "Donghai" asphalt, high performance, low-temperature properties,durability and adhesiveness of the mechanism.Mixing time and in different experimental performance comparison of different content obtained, 90A asphalt, rock asphalt mixing appropriate amount of 8%, the mixing time is 25min, into the temperature is 170℃.90B "Donghai" asphalt mixing asphalt suitable amount of rock is about 8%, the mixing time is 20min,into the temperature is 170℃.Different contents of components in the analysis, found that modified asphalt composition change and penetration, softening point, viscosity, a high correlation, regression and correlation coefficients of the relationship. Performance indicators, and by changes in the relationship between the components can be a reasonable theoretical estimate rock asphalt mixing capacity. Through asphalt, resin and asphaltene + resin and asphaltene / resin, saturate / aromatic Grading changes of the East China Sea 90A Wuerhe rock asphalt pavement performance of asphalt to improve the mechanism to find the performance improvement reasons.