Study on the low-temperature performance of chemically cross-linked polyethylene composite modified asphalt binder

被引：3

作者：

Luo, Yuxin ^{[1
]}

Zhou, Tao ^{[2
]}

Jin, Tuo ^{[3
]}

Wang, Cheng ^{[1
]}

Ma, Yuhao ^{[1
]}

Song, Hao ^{[1
]}

Zhang, Hong ^{[1
]}

机构：

[1] Northwest Minzu Univ, Coll Chem Engn,Gansu prov Res Ctr Basic Sci Surfac, Gansu Prov Biomass Funct Composites Engn Res Ctr, Key Lab Util Environm Friendly Composite Mat & Bio, Lanzhou 730124, Peoples R China

[2] Gansu Prov Gen Stn Agr Ecol & Resource Conservat T, Lanzhou 730000, Peoples R China

[3] Minist Agr & Rural Dev, Gen Stn Agroecol & Resource Conservat, Beijing, Peoples R China

来源：

CHEMICAL ENGINEERING SCIENCE | 2025年 / 302卷

关键词：

Asphalt binder; Polyethylene (PE); Ethylene-vinyl acetate(EVA); Silane coupling agent; Low-temperature creep properties; Microcosmic analysis; WASTE; LINKING;

D O I：

10.1016/j.ces.2024.120827

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The great disadvantage of polyethylene modified asphalt in terms of low-temperature performance has led to limitations in its large-scale application. The aim of this study was to investigate whether peroxides and silane coupling agents can significantly improve the low-temperature performance of modified asphalt through chemical cross-linking. Therefore, nine experimental groups were designed through orthogonal experiments, and the low-temperature properties of matrix asphalt, control asphalt, and nine modified asphalt groups were evaluated by using a bending beam rheometer, and microscopic analyses were carried out using FM, SEM, and FTIR tests. The experimental results showed that the 5 degrees C ductility increased to a maximum of 136.3 % and 166.2 % compared to the matrix asphalt and control asphalt, and the cross-linking between the polymer and the asphalt was enhanced microscopically. Chemical cross-linking of asphalt and polymer using peroxide and silane coupling agent provides a feasible method to expand the application of polymer in pavement engineering.

引用

页数：16