Rheological and Microscopic Properties of PR.M/Crumb Rubber Composite Modified Asphalt

被引：0

作者：

Guo N. ^{[1
]}

Yu C. ^{[1
]}

Wang L. ^{[1
]}

Jin X. ^{[1
]}

Wen Y. ^{[1
]}

机构：

[1] College of Transportation Engineering, Dalian Maritime University, Dalian

来源：

Cailiao Daobao/Materials Reports | 2021年 / 35卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Microscopic properties; Permanent deformation; PR-Module/crumb rubber; Reaction mechanism; Rheological properties;

D O I：

10.11896/cldb.20030166

中图分类号：

学科分类号：

摘要：

In order to improve the high and low temperature performance of base asphalt, the PR-Module/crumb rubber composite modified asphalt was produced with different contents of crumb rubber, PR-Module, respectively. The rheological properties of PR-Module/crumb rubber compo-site modified asphalt were investigated by using the dynamic shear rheometer and bending beam rheometer tests, and the multiple stress creep recovery (MSCR) test was performed to evaluate the resistance to permanent deformation of PR-Module/crumb rubber composite modified asphalt. The thermogravimetric analysis test was employed to obtain the thermal decomposition temperature of PR-Module/crumb rubber composite modified asphalt. The Fourier transform infrared spectroscopy test was conducted to explore the chemical reaction during the preparation of PR-Module/crumb rubber composite modified asphalt. The reaction mechanism of PR-Module/crumb rubber composite modified asphalt was investigated by using fluorescence microscopy. The results showed: the PR-Module exhibited a better high temperature performance than the crumb rubber, the addition of crumb rubber can improve the low temperature performance of base asphalt. Both the crumb rubber and the PR-Module can increase the resistance to permanent deformation of base asphalt. The thermal decomposition temperature of the PR-Module/crumb rubber composite modified asphalt was related to the dosage of PR-Module and crumb rubber, the thermal decomposition temperature increased with an increase in the dosage of PR-Module and crumb rubber. The Fourier transform infrared spectroscopy test showed that a chemical reaction occurred in the preparation process of PR-Module/crumb rubber composite modified asphalt. The swelling of crumb rubber can improve the low temperature performance of base asphalt, and the swelling of PR-Module can enhance the high temperature performance of base asphalt. © 2021, Materials Review Magazine. All right reserved.

引用

页码：10080 / 10087

页数：7

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