Effect of moisture on the aging behavior of asphalt binder |
| |
Authors: | Tao Ma Xiao-ming Huang Enad Mahmoud Emil Garibaldy |
| |
Institution: | (1) Department of Civil Engineering, Clemson University, Clemson, SC 29634-0911, USA;(2) Asphalt Rubber Technology Service (ARTS), Department of Civil Engineering, Clemson University, Clemson, SC 29634-0911, USA;(3) Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan, 430070, China; |
| |
Abstract: | The moisture aging effect and mechanism of asphalt binder during the in-service life of pavement were investigated by laboratory
simulating tests. Pressure aging vessel (PAV) test simulating the long-term aging of binder during the in-service life of
pavement was modified to capture the long-term moisture aging effect of binder. Penetration grade tests including penetration
test, soften point test, and ductility test as well as Superpave™ performance grade tests including viscosity test, dynamic
shear rheometer test, and bending beam rheometer test were conducted to fully evaluate the moisture aging effect of binder.
Fourier transform infrared spectroscopy test and Gel-permeation chromatography test were applied to provide a fundamental
understanding of the moisture aging mechanism of binder. The results indicate that moisture condition can accelerate the aging
of asphalt binder and shorten the service life of asphalt binder. The modified PAV test with moisture condition can well characterize
the moisture aging properties of asphalt binder. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
| 点击此处可从《矿物冶金与材料学报》浏览原始摘要信息 |
| 点击此处可从《矿物冶金与材料学报》下载免费的PDF全文 |
|