Study of low-temperature performance of short fiber-reinforced asphalt seal band

To study the low-temperature performance of short fiber-reinforced asphalt seal band, different experiments were set by changing the content, length, and type of fibers. Their low-temperature performance was analyzed by low-temperature tensile tests as well as stress relaxation experiments, and the fracture morphology was analyzed using a scanning electron microscope; elastic modulus, ultimate tensile stress, low-temperature tensile fracture energy, and relaxation index are reported. Furthermore, a new evaluation scheme was given according to an entropy evaluation method. Results indicate that fibers effectively improve the low-temperature performance of the asphalt seal band. Specifically, in terms of the mechanical properties of the asphalt seal band during the tensile process, it is the best to infuse a 0.3 % volume fraction of 6-mm basalt fiber into the matrix, while according to the evaluation system established in this research, it is the best to use a 0.3 % volume fraction of 6-mm polyester fiber.