三角形坐标系下沥青组分与粘度、粘附性关系

Relationship among asphalt component,viscosity and adhesion in triangular coordinate system

为研究沥青的组分和组分构成关系对沥青技术性质的影响,选用13种道路石油沥青和2种集料,采用四组分、表观粘度与粘附性试验研究了沥青组分与粘度、粘附性之间的关系。提出了三角形坐标系下的沥青四组分试验结果表征方法,采用沥青四组分数据绘制沥青特征三角形,利用惯性矩反映沥青的组分构成特征,分析了沥青四组分数据构成的三棱锥几何特性与粘度、粘附性的联系。试验结果表明:除沥青的组成成分之外,沥青组成成分的结构差异也会影响其粘度及集料粘附性;对于不同品牌而相同标号的沥青,在三角形坐标系下,沥青组分特征三角形的惯性矩越大,与集料粘附性越好。

In order to assess the influences of asphalt component and composition on asphalt technical properties,thirteen types of pavement petroleum asphalts and two kinds of typical aggregates were selected.The relationship among asphalt component,viscosity and adhesion was investigated by using tests of four-component,apparent viscosity and adhesion.The characterization method of asphalt four-component test result by using triangular coordinate system was put forward.The asphalt characteristic triangle was drawn with four-component data.The characteristic of asphalt composition was represented by inertia moment.The asphalt pyramid was drawn based on asphalt four-component data and the relationship among its geometry characteristics,viscosity and adhesion was analyzed.Analysis result indicates that except asphalt components,its composition differences also have influences on asphalt viscosity and aggregate adhesion.For the asphalts with same penetration grade and different brands,triangular coordinate analysis result shows the aggregate adhesion increases with the increase of the inertia moment of asphalt four-component characteristic triangle.6tabs,6figs,18refs.