中外公路2025，Vol.45Issue(1)：80-87,8.DOI:10.14048/j.issn.1671-2579.2025.01.010
耐高温不粘轮乳化沥青的制备与性能研究
Preparation and Performance of Emulsified Asphalt with High-Temperature Resistant and Wheel Sticking-Free Effects
摘要
Abstract
To address the problem of wheel sticking at high temperatures in the construction process of existing wheel sticking-free emulsified asphalt of tack coat,this paper adopted the composite modification method of 70#and 15#matrix asphalt and waterborne polyurethane resin(WPR)to prepare hard asphalt-WPR(HA-WPR)-modified emulsified asphalt in accordance with the high-temperature resistant and wheel sticking-free requirements.Through a series of laboratory tests,the technical performance,wheel sticking-free performance,and interlayer bonding performance of the emulsified asphalt were researched and compared with ordinary wheel sticking-free emulsified asphalt and ordinary emulsified asphalt tack coat oil.The results show that the technical performance of the HA-WPR-modified emulsified asphalt meets the specification requirements,and the emulsification effect and storage stability are better.Under the high-temperature conditions at 60℃and 65℃,when the blending ratio of HA-WPR-modified emulsified asphalt is 30%of the 70#asphalt,70%of the 15#asphalt(mass ratio of asphalt),and 5%of WPR(mass ratio of emulsified asphalt),the adhesion rate is the lowest,only 0.8%and 2.3%,respectively.Compared with the ordinary wheel sticking-free emulsified asphalt and the ordinary emulsified asphalt tack coat oil,its high-temperature resistant and wheel sticking-free effects are significant,and the demulsification speed is fast,which is convenient for optimizing the construction process and improving efficiency.At room temperature and high temperature,the interlayer shear strengths of the HA-WPR-modified emulsified asphalt are higher than that of ordinary wheel sticking-free emulsified asphalt and ordinary emulsified asphalt tack coat oil.Its interlayer bonding strength is higher;the temperature sensitivity is weaker,and it has good technical economy.Therefore,the HA-WPR-modified emulsified asphalt can effectively alleviate the phenomenon of wheel sticking at high temperatures in the construction process of asphalt pavement tack coat,improve the service life of pavement,and reduce the maintenance frequency,and it has a higher cost-performance ratio.关键词
道路工程/改性乳化沥青/黏层/水性聚氨酯树脂/层间黏结性能Key words
road engineering/modified emulsified asphalt/tack coat/waterborne polyurethane resin/interlayer bonding performance分类
交通工程引用本文复制引用
严涵,查旭东,康潇刚,龚演,张政基,张文帅..耐高温不粘轮乳化沥青的制备与性能研究[J].中外公路,2025,45(1):80-87,8.基金项目
国家重点研发计划项目(编号:SQ2021YFB3200301) （编号:SQ2021YFB3200301）
中央级公益性科研院所基本科研业务费专项资金资助项目(编号:2023-9035) （编号:2023-9035）
