抗剥落剂对花岗岩改性沥青混合料水稳定性的影响  

Effect of anti-stripping agent on moisture susceptibility of granite modified asphalt mixture

作　　者：黄丽卿[1] 赖晓龙[1] 孙华[1] HUANG Liqing;LAI Xiaolong;SUN Hua(Department of Transportation Engineering,Fujian Forestry Vocational and Technical College,Nanping 353000,China)

机构地区：[1]福建林业职业技术学院交通工程系,福建南平353000

出　　处：《山东交通学院学报》2022年第2期101-107,共7页Journal of Shandong Jiaotong University

基　　金：福建省教育厅中青年教师教育科研项目(JAT191263)。

摘　　要：为缓解道路建设压力,在我国沥青路面气候分区的夏炎热冬温潮湿(1-4-1)区,研究采用花岗岩为骨料的沥青玛蹄脂碎石(stone matrix asphalt,SMA)改性混合料的水稳定性。选用3种非胺类抗剥落剂进行优选试验,分析抗剥落剂对苯乙烯-丁二烯-苯乙烯嵌段共聚物(styrene butadiene styrene,SBS)改性沥青性能及SBS改性沥青与花岗岩集料黏附性的影响,对比同级配下花岗岩SMA-13和石灰岩SMA-13改性沥青混合料的水稳定性。结果表明:非胺类抗剥落剂能改善SBS改性沥青与花岗岩集料的黏附性,采用Ⅲ号抗剥落剂可明显提高花岗岩SMA-13改性沥青混合料的马歇尔稳定度、浸水残留稳定度和冻融劈裂抗拉强度比,减小浸水飞散损失比;选择优质花岗岩集料和Ⅲ号抗剥落剂,花岗岩SMA-13改性沥青混合料的水稳定性优于同级配的石灰岩SMA-13改性沥青混合料。To relieve the pressure of road construction,the moisture susceptibility of stone matrix asphalt(SMA)modified asphalt mixture using granite as aggregate is studied in the hot summer and humid winter areas(1-4-1)of asphalt pavement climatic zone.Three kinds of non-amine anti-stripping agents are selected for the optimization test.The performance of modified asphalt with anti-stripping agent and the bonding performance between modified asphalt and the granite aggregate are studied.The moisture susceptibility of granite SMA-13 and limestone SMA-13 under the same gradation is compared.The result shows that the non-amine anti-stripping agent can improve the adhesiveness of modified asphalt and granite aggregate.The Marshall stability,immersion residual stability and freeze-thaw splitting tensile strength ratio of granite SMA-13 modified asphalt mixture are greatly improved,and the immersion dispersion loss ratio is reduced with the No.III anti-stripping agent.The high quality granite aggregate and anti-stripping agent is selected,the water stability of granite SMA-13 modified asphalt mixture is better than that of limestone SMA-13 asphalt mixture.

关 键 词：抗剥落剂 花岗岩 改性沥青 SMA-13 黏附性 水稳定性 

分 类 号：U414[交通运输工程—道路与铁道工程] TU528.42[建筑科学—建筑技术科学]