1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang′an University, Xi′an , Shaanxi 710064, China； 2. Zhoukou Highway Administration Bureau of Henan Province, Zhoukou, Henan 466000, China； 3. Jinjiang Housing and Urban Rural Construction Bureau of Fujian Province, Jinjiang, Fujian 362200, China
Abstract：To solve the shortcomings of waterboiling method for evaluating the adhesion between SBS modified asphalt and aggregated rock, the adhesion evaluation method between asphalt and aggregated rock was designed based on shear test and adhesion mechanism analysis of asphalt and aggregated rock. The quantitative index was proposed to evaluate the adhesionshear strength， and the feasibility of shear strength index was verified by shear test. The effects of SBS modifier type and dosage and test temperature on the adhesive effect of SBS modified asphalt and aggregated rock were analyzed. The results show that the adhesive effect of asphalt and aggregate is improved by SBS， and the asphalt and stone adhesion is obviously increased with the increasing of SBS dosage. Compared with matrix asphalt, the shear strength of SBS modified asphalt and stone is increased by 100% when SBS content is 4%. The shear strength index can be used to evaluate the adhesion of asphalt and stone quantitatively, which provides reference for performance assessment of modified asphalt and quality control.
2017, Vol. 38 
