沥青流变特性研究

【作者】 李秀君；

【导师】 戴经梁；

【作者基本信息】 长安大学 ， 材料学， 2002， 硕士

【摘要】 针对目前我国道路石油沥青技术标准评价沥青路用性能存在的种种缺陷，以及美国SHRP试验设备因其昂贵性而暂时无法在国内大量推广应用这一事实，本课题试图利用SHRP流变思想，采用针入度、延度等常规试验设备进行改性及非改性沥青流变特性的研究，并将常规试验流变指标评价沥青路用性能的结论与SHRP流变指标评价结论作比较，找出它们之间的相关关系，从而肯定了采用常规试验设备进行沥青流变特性及路用性能研究的有效性。 本课题的研究结论可作为我国道路石油沥青技术规范修订的参考依据。 此外，本文通过对沥青改性前后流变特性的研究，进一步分析了改性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】 In accordance to the defects presented in using the Chinese Road Asphalt Technical Standards to assess the asphalt performance as well as the facts that the SHRP test equipment of USA can not be widely employed in China since its being very expensive, the SHRP rheological concept is utilized in the research project to carry out the exploration of the rheological properties of modified and non-modified asphalt by using conventional tests such as penetration and ductility. The conclusions obtained by using the conventional test rheological index to assess asphalt performance are compared with those by using the SHRP rheological index and their certain correlation are found. The efficiency of using conventional test equipment to study the rheological properties and road performance of asphalt, therefore, are proved.Additionally the modification mechanism and the microscope characteristics of modified asphalt are analyzed in the paper to provide some theoretical base for future effective modification to asphalt.更多还原