摘要
文章以南宁-梧州二级公路路面大修改造工程为依托,介绍了旧混凝土路面碎石化沥青加铺层的技术特性及作用机理,阐述了Superpave沥青混合料矿料级配设计方法,并根据沥青混合料分形级配理论,探讨了粗集料用量对沥青混合料高温稳定性能的影响。结果表明:增加了26.5 mm1、9 mm的粗集料用量的AC-20沥青混合料具有较好的高温稳定性能。
Taking the pavement reconstruction project in Nan-Wu second grade road as an example,the article introduces the technical property and functioning principle of rubblization asphalt overlay in old concrete pavement.It discusses the grading design method for Super- pave asphalt mixture and explains the impact of coarse aggregate on the high temperature stability of asphalt mixture based on the grading theory.The result shows that the AC-20 asphalt mixture that add 26.5 mm and 19 mm coarse aggregate has better high temperature stability
出处
《西部交通科技》
2011年第5期13-15,26,共4页
Western China Communications Science & Technology
关键词
碎石化
沥青加铺层
级配设计
高温稳定性
Rubblization
Asphalt oveday
Grading design
High temperature stability
