PVC和NS复合改性沥青高温流变性能评价
EVALUATION OF HIGH TEMPERATURE RHEOLOGICAL PROPERTIES OF PVC AND NS COMPOSITE MODIFIED ASPHALT BINDER
张展铭 1Nguyen Hoang Phong2
作者信息
- 1. 江苏高速公路工程养护技术有限公司,南京 211106
- 2. 越南林业大学机电与土木工程学院,河内13417
- 折叠
摘要
为探究聚氯乙烯(PVC)和纳米二氧化硅(NS)对沥青高温流变性能的影响,文中通过基本物理性能试验、温度扫描试验和多重应力蠕变回复试验进行测试.结果表明PVC和NS的加入可提高沥青的粘度和稠度,降低温度敏感性,但PVC对低温性能有明显劣化影响.此外,改性剂的加入可提高沥青的高温流变性能,提升高温抗永久变形能力,延缓车辙病害的发生.
Abstract
The physical property,temperature scanning tests,and multiple stress creep recovery tests are conducted to investigate the effects of polyvinyl chloride(PVC)and nano-silica(NS)on the high temperature rheological prop-erties of asphalt.The results show that the addition of PVC and NS improve the viscosity and consistency of asphalt,and reduce temperature sensitivity,but the low-temperature properties have a deteriorating effectiveness due to the addition of PVC.In addition,the addition of modifiers improves the high temperature rheological properties of as-phalt,enhances the high temperature resistance to permanent deformation,and delays the occurrence of rutting dis-ease.
关键词
复合改性沥青/PVC/NS/流变性能Key words
composite modified asphalt/PVC/NS/rheological property引用本文复制引用
出版年
2024
NETL
NSTL
万方数据