【摘要】 对沥青进行不同温度、不同针重及不同贯入时间下的针入度试验 ,以此来评价沥青的流变特性及路用性能。同时 ,通过对沥青改性前后流变特性的研究 ,进一步分析了沥青的改性机理及微观特性 ,为今后沥青进行有效改性提供了一定的理论依据。更多还原

【Abstract】 The rheological property and pavement performance of asphalts are studied by carrying out penetration test at different temperature,different weight and different time.The modification mechanism and the microscope characteristics of modified asphalt are analyzed to provide some theoretical base for future effective modification to asphalt.更多还原