森林工程2017，Vol.33Issue(2)：83-87,5.
60℃零剪切粘度ZSV指标在高速公路养护沥青评价中的应用
The Application of 60℃ ZSV Index in the Evaluation ofAsphalt of Highway Maintenance
摘要
Abstract
According to the different situation of expressway maintenance engineering,SBS modified asphalt samples of corresponding conditions were prepared through laboratory simulation.Dynamic frequency sweep test was carried out by using dynamic shear rheometer.60℃ ZSV values of different sample was obtained by polynomial fitting method using Carreau model.Thetest results showed that the higher the storage temperature and the longer storage time,the greater decreasing amplitude of modified asphalt ZSV.This indicated that in the process of maintenance engineering,the modified asphalt can't be stored for a long time in high temperature condition.60℃ ZSV of SBS modified asphalt has a decreasing trend with the increasing number of the cycles.The decrement of 60℃ ZSV from 170℃ to room temperature was bigger than that from 150 ℃ to 130 ℃ in the same number of cycles.It was not appropriate to repeatedly heat the modified asphalt during in a long period maintenance project and the exorbitant storage temperature was not recommended.关键词
高速公路/养护工程/SBS改性沥青/ZSV/评价Key words
expressway maintenance engineering/SBS modified asphalt/ZSV/evaluation分类
交通工程引用本文复制引用
祝争艳,江瑞龄,孟令国..60℃零剪切粘度ZSV指标在高速公路养护沥青评价中的应用[J].森林工程,2017,33(2):83-87,5.基金项目
2016年江苏省交通科研项目(2016707-2) （2016707-2）
