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依据对2种沥青与3种级配的混合料马歇尔试验及渗水试验的结果,利用灰关联理论对沥青原材料性质、油石比、矿料级配、空隙率等指标对沥青路面渗水的影响程度进行分析,得出各相关因素对其影响程度的排序结果。灰关联理论分析结果表明:空隙率是影响路面渗水特性最主要的因素;吸水率的大小既反映试件的密实程度,又反映矿料开口空隙的状况,是影响渗水特性的重要因素;矿料间隙率反映全体集料的紧密程度,对渗水程度有重要影响。
Based on the results of Marshall test and water seepage test on the mixture of two kinds of asphalt and three gradations, the influence degree of asphalt raw material properties, oil to stone ratio, mineral grade, porosity and other indexes on water seepage of asphalt pavement was studied by using gray relational theory Analysis, come to the relevant factors on the degree of influence of sort results. The results of gray correlation analysis show that the porosity is the most important factor that affects the water seepage characteristics of the pavement. The size of the water absorption not only reflects the density of the specimen but also the void condition of the mineral material, which is an important factor affecting the water seepage characteristics. The porosity reflects the tightness of the aggregate and has a significant effect on the degree of seepage.