Performance optimization of composite modified asphalt sealant based on rheological behavior
详细信息 查看全文
- 作者：Yiqiu Tan ; Meng Guo ; Liping Cao ; Lei Zhang
- 关键词：Composite modified asphalt sealant ; Central composite design&ndash ; response surface methodology ; Rheological property
- 刊名：Construction and Building Materials
- 出版年：2013
- 出版时间：October, 2013
- 年：2013
- 卷：47
- 期：Complete
- 页码：799-805
- 全文大小：1647 K
文摘
In order to improve the performance of composite modified asphalt, the central composite design-response surface methodology was used to determine the optimum content of raw materials. The rheological behavior including accumulation of deformation, viscoelastic ratio, creep strength, creep strain rate ¡°m¡± was analyzed by testing in central composite model. Response surface of the overall desirability was established. The test results indicated that the optimum raw materials ratio was asphalt:rubber powder:additive:SBS:SBR = 100:25:7:5:3 (by weight). Central composite design could be used in optimization of the content of raw materials. It is effective to use energy method to evaluate viscoelastic properties of asphalt.