黏层用C9石油树脂/SBR复合改性乳化沥青性能研究
Study on the properties of emulsified asphalt modified by C9 petroleum resin/SBR composite for adhesive layer
黄峰 1黄维蓉 2杨波3
作者信息
- 1. 重庆交通大学 土木工程学院,重庆 400074;重庆市智翔铺道技术工程有限公司,重庆 401336
- 2. 重庆交通大学 材料科学与工程学院,重庆 400074
- 3. 重庆市智翔铺道技术工程有限公司,重庆 401336
- 折叠
摘要
采用C9 石油树脂和SBR胶乳制备高性能复合改性乳化沥青,通过三大指标试验、高温和低温流变试验评价了复合改性乳化沥青的宏观服役性能,借助激光粒度分析仪、荧光显微镜和红外光谱仪分析复合改性乳化沥青的储存稳定性和相容性,揭示C9 石油树脂/SBR复合改性剂对乳化沥青的改性机理.结果表明,C9 石油树脂提高了乳化沥青的力学强度和高温抗变形能力,而 SBR胶乳明显改善乳化沥青低温抗裂性能,蠕变劲度最大降低30.4%.制备的C9 石油树脂/SBR复合改性乳化沥青储存稳定性良好,C9 石油树脂和SBR胶乳对乳化沥青的复合改性机理为物理混溶,C9 石油树脂的掺量不高于8%.
Abstract
C9 Petroleum resin and SBR latex were used to prepare high performance composite modified emulsified asphalt.The macro service performance of the composite modified emulsified asphalt was evalu-ated by three index tests,high temperature and low temperature rheological tests.The storage stability and compatibility of the composite modified emulsified asphalt were analyzed by laser particle size analyzer,fluorescence microscope and infrared spectrometer,and the modification mechanism of C9 petroleum res-in/SBR composite modifier on the emulsified asphalt was revealed.The results show that C9 petroleum resin can improve the mechanical strength and high temperature deformation resistance of emulsified as-phalt,while SBR latex can significantly improve the low temperature cracking resistance of emulsified as-phalt and reduce the creep stiffness by30.4%.The prepared C9 petroleum resin/SBR composite modified emulsified asphalt has good storage stability.The composite modification mechanism of C9 petroleum resin and SBR latex on emulsified asphalt is physical miscibility.It is recommended that the content of C9 petroleum resin should not be higher than 8%.
关键词
道路工程/C9石油树脂/储存稳定性/流变性能Key words
road engineering/C9 petroleum resin/storage stability/rheological property引用本文复制引用
基金项目
国家重点研发计划(2022YFB2602605)
重庆市科技创新领军人才支持计划(CSTCCXLJRC201720)
重庆市交通科技项目(KJXM2018-0884)
出版年
2024
NETL
NSTL
万方数据