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选取了具有代表性的两种基质沥青,通过比较“基质沥青+湖沥青”和“基质沥青+灰分”的各项性能,间接研究湖沥青中地沥青对沥青胶浆高温性能的影响;测试了4种沥青胶浆在4种不同粉胶比下的动态剪切试验(DSR)。在综合分析各种沥青胶浆的试验结果上,提出了湖沥青改性沥青中湖沥青含量与车辙因子G*/sinδ间的关系。
Two kinds of matrix asphalt were selected to study the effects of asphalt in lake asphalt on the high temperature performance of asphalt mortar by comparing the properties of “matrix asphalt + lake asphalt” and “matrix asphalt + ash” The dynamic shear tests (DSR) of four kinds of asphalt mortar under four different ratios of cement to binder were tested. Based on the comprehensive analysis of test results of various asphalt mortars, the relationship between lake asphalt content and rutting factor G * / sin δ in lake asphalt modified asphalt is proposed.