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沥青混合料密实程度的大小直接影响到路面结构的抗拉或抗压强度,橡胶沥青混合料中由于高弹性废胎胶粉的存在,使得其压实后的特性与普通沥青混合料有很大的区别。该文选用橡胶沥青混合料AR-AC-13进行橡胶沥青中不同胶粉掺量、不同油石比、不同细料控制率、不同击实功(次数)的马歇尔击实试验,测试其击实后与冷却后试件高度计算线膨胀率,分析马歇尔试件线膨胀率与以上各因素之间的关系,并分析橡胶沥青混合料线膨胀性能与体积指标之间的相关性,在此基础上建立AR-AC-13混合料马歇尔试件的线膨胀率与以上各因素的预估模型。
The density of asphalt mixture directly affects the tensile strength or compressive strength of the pavement structure. Because of the presence of high-elasticity waste rubber powder in the rubber asphalt mixture, the compaction characteristics of the asphalt mixture are very large compared with that of common asphalt mixture The difference In this paper, the rubber asphalt mixture AR-AC-13 for rubber asphalt rubber powder with different content, different oilstone ratio, different fines control rate, different compaction work (number) Marshall compaction test to test the compaction And the height of the specimen after cooling were calculated, the relationship between the coefficient of linear expansion of the Marshall specimen and the above factors was analyzed, and the correlation between the linear expansion property of rubber asphalt mixture and the volume index was analyzed. Based on this, AR-AC-13 Mixture Marshall Specimen’s Linear Expansion Rate and Predictors of Above Factors.