摘要
基于GAC-20C级配,采用GTM法并通过低温小梁弯曲、浸水马歇尔、冻融劈裂、车辙、四点弯曲疲劳寿命和单轴贯入等试验,对外掺2.35%BRA+70号沥青混合料与70号沥青混合料和SBS改性沥青混合料进行室内研究;并选用合适的车辙预估模型,计算3种不同中面层混合料类型路面结构的永久变形,最后对其建设成本进行对比分析。
The properties of GAC-20C asphalt mixtures modified by 2. 35% Buton rock asphalt （ BRA） were evaluated compared with A-70 asphalt and SBS modified asphalt mixtures, based on GTM mix design method and various conventional laboratory tests. Permanent deformation of pavement struc-tures with different middle layers were analyzed by a laboratory-developed model for rutting predic-tion. And the cost analysis of BRA pavement was presented by comparing with other pavements.
出处
《交通科技》
2017年第2期120-123,共4页
Transportation Science & Technology
