橡胶沥青混合料和易性与压实特性的相关性  

Correlation between workability and compaction property of rubber asphalt mixture

作　　者：张琛[1] 汪海年[1] 尤占平 李廉[3] 

机构地区：[1]长安大学道路结构与材料交通行业重点实验室,西安710064 [2]密歇根理工大学土木与环境工程系,美国霍顿49931 [3]兰州理工大学土木工程学院,兰州730050

出　　处：《东南大学学报（自然科学版）》2016年第1期202-208,共7页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51378074);交通运输部应用基础研究计划资助项目(2014319812180);长安大学优秀博士学位论文培育计划资助项目(310821150010)

摘　　要：为了研究橡胶沥青混合料的和易性与压实特性之间的关系,采用Superpave旋转压实仪和自行研制的和易性测试设备,测试了不同温度下的压实特性与和易性,并推荐了不同胶粉掺量所对应的适宜压实温度与胶粉细度.结果表明,当胶粉掺量为25%时,胶粉细度对橡胶沥青混合料压实过程的影响最为显著.当压实温度为190℃时,胶粉掺量对橡胶沥青混合料压实过程的影响最为显著.当胶粉细度为80目时,压实温度对橡胶沥青混合料压实过程的影响最为显著;橡胶沥青混合料的和易性越好,压实性能也越好.当胶粉掺量为5%和15%时,所推荐的适宜压实温度与胶粉细度分别为160℃和40目;当胶粉掺量为25%时,所推荐的适宜压实温度与胶粉细度分别为160℃和20目.To study the relationship between workability and compaction property of rubber asphalt mixture,the Superpave gyratory compactor（ SGC） and the self-developed workability test equipment were used to test the workability and compaction property of rubber asphalt mixture at different temperatures. The appropriate compaction temperatures and the powder fineness corresponding to different powder dosages were recommended. The results showthat,when the powder dosage is25%,the powder fineness has the greatest influence on the compaction process. When the compaction temperature is 190 ℃,the powder dosage has the greatest influence on the compaction process.When the fineness is 80 mesh,the compaction temperature has the greatest influence on the compaction process. The better the workability of rubber asphalt mixture,the better the compaction property. When the powder contents are 5% and 15%,the recommended compaction temperature is 160℃ and the powder fineness is 40 mesh. When the powder content is 25%,the recommended compaction temperature is 160 ℃ and the powder fineness is 20 mesh.

关 键 词：沥青混合料 橡胶沥青 和易性 压实特性 

分 类 号：U414[交通运输工程—道路与铁道工程]