摘要
在我国东北、华北及西北等地区分布有大面积的季节性冻土区,受气候环境,以及超载现象的影响,该地区的公路路面容易出现冬季冻胀和春融翻浆等病害,对路用性能造成严重影响.文中针对季节性冻土区的气候特点,选取布敦岩沥青作为研究对象,通过室内试验、现场试验分析,研究了岩沥青天然沥青在季节性冻土区的路用性能,同时也对其经济成本进行了分析.结果表明,岩沥青改性沥青可以适用于季节性冻土区公路铺面.
Highways in seasonal frozen area ,widely distributed in northern China ,tend to infect disea‐ses as heaving/frost boiling attributed to recurrent freezing and defrosting of water in the soil as well as fatigue load exerted by overloading vehicles .This paper focuses on the performance evaluation of rock asphalt modified asphalt in seasonal frozen area and Buton Rock Asphalt （BRA ） is chosen as a representative .Laboratory and field tests are conducted and the result manifests that BRA can upload the high/low temperature stability and enhance the resistance to water damage .Additionally ,a sim‐plified analysis is made to verify the economic value of BRA modified asphalt .In all ,rock asphalt has favorable potential in the application of road pavement in seasonal frozen area .
出处
《武汉理工大学学报（交通科学与工程版）》
2015年第5期981-984,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
黑龙江交通运输厅资助(批准号:[2010]298)
