石墨烯/胶粉复合改性沥青储存稳定性和流变性能研究
Study on the Storage Stability and Rheological Properties of Graphene-Rubber Powder Composite Modified Asphalt
方志江 1滕友金 2黄秋媚 2黄昌介2
作者信息
- 1. 贵州交通建设集团有限公司,贵州贵阳 550002
- 2. 广西交科集团有限公司,广西壮族自治区南宁 530007
- 折叠
摘要
为研究石墨烯对胶粉改性沥青储存稳定性和流变性能的影响,在胶粉掺量为基质沥青质量的20％的前提下,掺入不同掺量的石墨烯制备石墨烯/胶粉复合改性沥青,并对其开展储存稳定性试验和动态黏弹性力学试验,全面评价石墨烯/胶粉复合改性沥青的储存稳定性和流变性能.试验结果表明:石墨烯最佳掺量为基质沥青质量的1.0％,且0.5％、1.0％掺量的石墨烯能够显著改善胶粉改性沥青的储存稳定性、高温性能和疲劳性能,但随着石墨烯掺量增加到1.5％,石墨烯/胶粉复合改性沥青的各项性能均有所下降,因此石墨烯掺量不宜过高.该研究成果可为胶粉改性沥青的性能改善和复合改性提供技术路线和一定的参考.
Abstract
In order to investigate the effect of graphene on the anti segregation storage stability properties of rubber powder modified asphalt,graphene/rubber powder composite modified asphalt were prepared by adding different amounts of graphene when a rubber powder content was 20％of the matrix asphalt mass.Storage stability tests and dynamic viscoelasticity tests were conducted to comprehensively evaluate the composite modified asphalt.The ex-perimental results show that the optimal dosage of graphene is 1.0％of the mass of the matrix asphalt,and graphene with dosages of 0.5％and 1.0％can significantly improve the storage stability,high-temperature performance,and fatigue performance of rubber powder modified asphalt.However,when the graphene dosage increases to 1.5％,all the various properties of graphene/rubber powder composite modified asphalt decrease,so the graphene dosage should not be too high.This research result can provide a technical route and certain reference for the performance improvement and composite modification of rubber powder modified asphalt.
关键词
道路工程/石墨烯/胶粉改性沥青/复合改性/储存稳定性/流变性能Key words
road engineering/graphene/rubber powder modified asphalt/composite modification/storage stability/rheological properties引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据