Understanding the low temperature properties of Terminal Blend hybrid asphalt through chemical and thermal analysis methods

被引：42

作者：

Lin, Peng ^{[1
]}

Huang, Weidong ^{[1
]}

Tang, Naipeng ^{[1
]}

Xiao, Feipeng ^{[1
]}

Li, Yi ^{[1
]}

机构：

[1] Tongji Univ, Minist Educ, Key Lab Rd & Traff Engn, Shanghai 201804, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 169卷

基金：

中国国家自然科学基金;

关键词：

Terminal Blend hybrid asphalt binder; Aliphatic component; Glass transition temperature; Components distribution; Crumb rubber modifier; RUBBER BINDER; SPECTROSCOPY; PERFORMANCE; BITUMENS;

D O I：

10.1016/j.conbuildmat.2018.02.060

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Terminal Blend (TB) hybrid asphalt binders are composed of crumb rubber, SBS polymer and polyphosphoric acid (PPA). Understanding the relationship between the chemical composition and low temperature properties has a guiding significance for asphalt modification. In this study, BBR (Bending Beam Rheometer) test, GPC (Gel Permeation Chromatography) test, FTIR (Fourier Transform Infrared) test and DSC (Differential Scanning Calorimetry) test were used to evaluate the Theological and chemical properties of TB hybrid binder and TSRST (Thermal Stress Restrained Specimen test) was conducted to estimate the low temperature properties of mixture. The results indicated that crumb rubber and SBS improved low temperature properties, while PPA had an adverse effect. Furthermore, during the degradation of crumb rubber, aliphatic component was released, which played an important role in improving low temperature properties. Finally, TB hybrid asphalt mixture also had better low temperature properties than SBS modified asphalt mixtures according to TSRST results. (C) 2018 Published by Elsevier Ltd.

引用

页码：543 / 552

页数：10

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