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采用动态剪切试验、疲劳试验和轮辙试验研究了不同种类纤维沥青胶浆和混合料的流变性能和路用性能,并分析了流变性能与路用性能的联系。研究结果表明:各种纤维掺入后均能显著改善沥青胶浆的流变性能,纤维的使用能增大沥青胶浆的劲度并增大沥青胶浆粘弹性质中的弹性成分,纤维的增强作用在高温时表现更加明显;纤维沥青混合料的疲劳寿命和车辙动稳定度均增大,表明纤维能显著改善沥青混合料的抗疲劳性能和抗高温变形的能力。
The dynamic shear test, fatigue test and wheel tracking test were used to study the rheological properties and road properties of different types of fiber asphalt mortar and the mixture. The rheological properties and the road performance were also analyzed. The results show that all kinds of fibers can significantly improve the rheological properties of asphalt mortar, the use of fiber can increase the stiffness of asphalt mortar and increase the elastic properties of asphalt mortar viscoelastic properties, fiber The strengthening effect is more obvious at high temperature. The fatigue life and the dynamic stability of the rutting of fiber asphalt mixture all increase, which shows that the fiber can significantly improve the fatigue resistance and the ability of high temperature deformation of asphalt mixture.