生物基环氧冷补沥青液开发与混合料性能研究
Development of bio-based epoxy cold patch asphalt liquid and study on the performance of the mixture
索智 1徐士杰 2胡涛 2闫实 2赵子豪 2张月2
作者信息
- 1. 北京建筑大学土木与交通工程学院,北京 102616;北京未来城市设计高精尖创新中心,北京 102616;北京城市交通基础设施建设工程技术研究中心,北京 102616
- 2. 北京建筑大学土木与交通工程学院,北京 102616
- 折叠
摘要
采用环氧大豆油(ESO)作为反应型稀释剂,制备生物基环氧冷补沥青液(BECPAL),开发一种高性能的路面坑槽快速修复材料.首先,通过拉伸试验优化环氧大豆油、环氧树脂与固化剂的比例;其次,进行拉伸试验和黏度试验,以确定BECPAL中基质沥青、生物基环氧体系与稀释剂之间的比例;此外,还使用荧光显微镜观察了 BEC-PAL固化过程中微观形貌的变化;最后,对生物基环氧冷补沥青混合料(BECPMA)的路用性能进行评价,并与热拌沥青混合料(HMA)和普通溶剂型冷补沥青混合料(CPMA)进行对比.结果表明,BECPAL的容留时间可达60 min,ESO可以减少传统稀释剂和环氧树脂的用量;BECPMA具有强度高、固化速度快的特点,常温养生2 h即可达到11.59 kN;相较于HMA和CPMA,BECPMA表现出优异的高温性能,低温性能和水稳定性也有所提升.BECPMA可用于路面坑槽的快速修补.
Abstract
Epoxy soybean oil(ESO)is adopted as a reactive diluent to develop a high-performance cold patch asphalt liquid for rapid repair of pavement pits.The ratios of epoxy soybean oil,epoxy resin,and curing agent were optimized through tensile tests.Secondly,tensile tests and viscosity tests were conducted to determine the ratios among matrix asphalt,bio-based epoxy system,and diluent in BECPAL.Additional-ly,the microscopic morphology changes during the BECPAL curing process were observed using a fluores-cence microscope.Lastly,the road performance of the bio-based epoxy cold patch asphalt mixture(BECP-MA)was evaluated and compared with hot mix asphalt(HMA)and conventional solvent-based cold patch asphalt mixture(CPMA).The results showed that the retention time of BECPAL developed in this study can reach 60 min,and ESO can reduce the usage of traditional diluents and epoxy resins.BECPMA is characterized by high strength and fast curing speed,reaching 11.59 kN after curing at room temperature for 2 h.Compared to HMA and CPMA,BECPMA exhibits excellent high-temperature performance,with improvements also noted in low-temperature performance and water stability.BECPMA can be used for rapid repair of road potholes.
关键词
道路工程/生物基环氧冷补沥青液/环氧大豆油/路用性能/强度/固化度Key words
road engineering/bio-based epoxy cold patch asphalt liquid/epoxy soybean oil/road per-formance/strength/degree of curing引用本文复制引用
基金项目
国家重点研发计划(2022YFC3803405)
国家自然科学基金(52078024)
北京市教委科学研究计划(KM202110016011)
北京建筑大学研究生创新项目(PG2023045)
出版年
2024
NETL
NSTL
万方数据