The Interlaminar Shear and Fatigue Performance of Pavement Structure Connected by the Nail

摘要

The aim of this study is increasing the connection strength between the asphalt course and the semi-rigid base course. A revolutionary method was put forward, which used nails to connect the asphalt course to the rigid or semi-rigid base course. The interlaminar shear and fatigue performance of asphalt pavement were evaluated through shear and fatigue testing by using nails to connect the asphalt course with the semi-rigid base course. The results show that shear strength of the interface connected by the nails between the asphalt mixture and the cement stabilized macadam was double that of the interface connected by the modified asphalt emulsion prime and seal coat. Its fatigue life was extended 47.3% compared with that of the interface linked by the modified asphalt emulsion prime and seal coat. We demonstrate that the performance of the interlayer connection and asphalt pavement structure integrity can be improved by incorporating nails to connect the asphalt course with the semi-rigid base course.