# A Study of the Bond Strength and Mechanism between Basalt Fibers and Asphalt Binders  
[PERSON]  
1 College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China; [EMAIL_ADDRESS] (Z.S. ); [EMAIL_ADDRESS] (Y.L. ); [EMAIL_ADDRESS] (Z.W. ); [EMAIL_ADDRESS] (A.K. ); [EMAIL_ADDRESS] (P.X)  
[PERSON]  
1 College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China; [EMAIL_ADDRESS] (Z.S. ); [EMAIL_ADDRESS] (Y.L. ); [EMAIL_ADDRESS] (Z.W. ); [EMAIL_ADDRESS] (A.K. ); [EMAIL_ADDRESS] (P.X)  
[PERSON]  
1 College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China; [EMAIL_ADDRESS] (Z.S. ); [EMAIL_ADDRESS] (Y.L. ); [EMAIL_ADDRESS] (Z.W. ); [EMAIL_ADDRESS] (A.K. ); [EMAIL_ADDRESS] (P.X)  
[PERSON]  
1 College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China; [EMAIL_ADDRESS] (Z.S. ); yzuluyu1009@163. HMA (BF-HMA) has been systematically studied by many researchers. [PERSON], [PERSON] et al. prepared basalt fiber asphalt samples with three lengths (3, 6, and 9 mm) and four proportions (0%, 3%, 6%, and 9%, according to the weight of asphalt binders) [15]. The comprehensive strength of asphalt mastics was the best with a fiber length of 6-9 mm and a fiber content of 3-6%. [PERSON], [PERSON] et al. experimentally determined that the recommended basalt fiber content was 2% by weight of asphalt binder based both on dispersion and rheological properties [16]. The recommended basalt fiber length was 9 mm. [PERSON] selected different lengths (3, 6, 9, 12, and 15 mm) of BF and then prepared HMA samples using mixed-length BFs [17]. The results showed that mixed-length BFs greatly improved the overall performance of HMA. [PERSON], [PERSON] et al. suggested that the optimum length of basalt fibers is 6 mm and that the optimum content is 5-7% according to the weight of asphalt mastics [18; 19]. [PERSON], [PERSON] et al. compared an asphalt binder reinforced with basalt fibers to an asphalt binder without fibers. The dosages of basalt fiber used in the study were 0.5%, 1.0%, 1.5%, 2.0%, and 2.5% by weight of the asphalt binder. Basalt asphalt binder provided better crack resistance, especially at high temperatures. In addition, it was found that the performance of the binder could only be significantly improved with a fiber dosage of 1% [20]. [PERSON], [PERSON] et al. discovered that the tensile strength of asphalt-fiber mastics increased because the basalt fibers carried part of the tensile load [21]. This increase in tensile strength implied that there was good adhesion between the asphalt and fibers. [PERSON], [PERSON] et al. studied basalt fibers for asphalt mastic deformation resistance, high-temperature performance, and low-temperature performance [22]. The results showed that the fibers improved the deformation resistance of the asphalt mastic. The morphology of the fibers affected the rheological properties of fiber asphalt mastic and changed its mechanism. [PERSON], [PERSON] et al. investigated the effect of basalt fibers on asphalt binders and mastics at low temperatures. The fatigue resistance of an asphalt binder enhanced by basalt fibers was evaluated [23]. The test results indicated that the tensile strength and fatigue life of asphalt binder can be significantly improved by using an appropriate content of basalt fibers. [PERSON], [PERSON] et al. comprehensively characterized the rheological properties of modified asphalt binders. The rheological properties were analyzed using tools such as a Dynamic Shear Rheometer (DSR) [24]. According to the test results, the optimal amount of modifier was changed to 4%, and the optimal amount of basalt fiber was changed to 6%. In some special cases, the content of modifiers can be changed appropriately. [PERSON], [PERSON] et al.