Preparation and Performance of Emulsified Asphalt with High-Temperature Resistant and Wheel Sticking-Free Effects

YAN Han, School of Traffic & Transportation Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , ChinaFollow
ZHA Xudong, School of Traffic & Transportation Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China
KANG Xiaogang, School of Civil Engineering and Transportation , North China University of Water Resources and Electric Power , Zhengzhou , Henan 450045 , China
GONG Yan, Research Institute of Highway Ministry of Transport , Beijing 100088 , ChinaFollow
ZHANG Zhengji, School of Civil Engineering and Transportation , North China University of Water Resources and Electric Power , Zhengzhou , Henan 450045 , China
ZHANG Wenshuai, School of Civil Engineering and Transportation , North China University of Water Resources and Electric Power , Zhengzhou , Henan 450045 , China

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.

Publication Date

2-22-2025

DOI

10.14048/j.issn.1671-2579.2025.01.010

First Page

Last Page

Submission Date

March 2025

Recommended Citation

Han, YAN; Xudong, ZHA; Xiaogang, KANG; Yan, GONG; Zhengji, ZHANG; and Wenshuai, ZHANG (2025) "Preparation and Performance of Emulsified Asphalt with High-Temperature Resistant and Wheel Sticking-Free Effects," Journal of China & Foreign Highway: Vol. 45: Iss. 1, Article 10.
DOI: 10.14048/j.issn.1671-2579.2025.01.010
Available at: https://zwgl1980.csust.edu.cn/journal/vol45/iss1/10

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