灰色系统理论在研究沥青老化中的应用

灰色系统理论提出了一种新的分析方法 ,称为系统的关联度分析方法。采用灰色系统理论研究了道路沥青老化后的组成变化与反映沥青的理化性能的针入度、软化点和反映沥青感温性能的针入度指数PI、当量软化点T80 0 、当量脆点T1.2 以及反映沥青抗老化性能的粘度、胶体不稳定指数Ic 变化的关系。关联度分析结果表明 ,影响它们的主要因素是沥青质含量的变化和胶体结构的变差。实验首次从数学的角度研究了沥青组成变化与沥青理化性能变化的关系 ,研究结果与经验分析的结果基本一致

The Application of the Grey System Theory in Asphalt Aging Study

The system, in which parts of information have been known while others unknown, is called grey system. By this theory, a sort of new analysis method has been put forward named associated degree analysis. In this paper, grey system theory was used to study the relationship between the change of asphalt composition and the change of its deferent performance during its aging. The associated degree analysis showed that the increase of asphatlene and change of colloidal structure are the main reason why the deferent performance of the paving asphalt turns worse after aging. Of the paving asphalt composition, the asphaltene content has the most obviously association with the PI. The relationship between the change of compositions of the paving asphalt and the change of its performance was firstly studied by mathematics method in this paper. The result from mathematics analysis was in accordance with that from experiential analysis.