Study on the Effect of Fibers on the Properties of Asphalt Mastics

To study the influence of fiber on the properties of asphalt mortar, the properties of lignin fiber, polyester fiber, and basalt fiber were summarized and analyzed respectively. The high- and low-temperature properties of fiber asphalt mortar were studied and analyzed by using three indexes, rutting factor and tensile fracture energy. The results showed that all three kinds of fibers could improve the performance of asphalt mortar to varying degrees, with lignin fiber demonstrating the best effect, followed by basalt fiber and polyester fiber. The type the fiber can be selected based on the required thermal stability and cost depending on the project type.