Comparative Study on the Properties of Different Fiber-modified Asphalts

Abstract

As a major cotton planting country, China has abundant green cotton straw resources. If these resources can be skillfully applied to the construction of asphalt pavement, it can not only significantly improve the performance of asphalt and reduce the life cycle cost, but also effectively solve the environmental pollution caused by straw burning and accumulation. The problem of high-value utilization of crop straw contributes to the construction of a sustainable transportation system. Therefore, the main research contents and conclusions are as follows: Fiber blending in asphalt can effectively improve asphalt performance, improve asphalt pavement life. Cotton straw fiber, basalt fiber and polyester fiber fiber were made into different kinds of modified asphalt, its softening point, penetration, ductility of a series of experimental research, compared with different kinds of 3% fiber dosage on the asphalt modification effect. The study proved that cotton straw fiber, basalt fiber and polyester fiber fiber are to a certain extent to enhance the performance of asphalt, the integrated degree of penetration, softening point, ductility data can be seen, cotton straw fiber straw fiber modified asphalt has a more excellent overall performance.