Journal Published Online: 26 January 2021
Volume 49, Issue 6

Using Polyphosphoric Acid and Sulfur to Improve Storage Stability, Aging, and Rheological Properties of High-Density Polyethylene–Modified Asphalt Binder

CODEN: JTEVAB

Abstract

One method for reducing the rutting failure of asphalt pavements is to modify the asphalt binder with polyethylene. However, the instability and phase separation between components has always been a major problem in achieving a homogeneous asphalt binder–polyethylene combination. To improve storage stability, one solution is to use crosslinking agents. In this study, the base asphalt binder was modified by using 3 and 7 % high-density polyethylene (HDPE). Subsequently, 1.5 % polyphosphoric acid (PPA) and 0.5 % sulfur were combined with polymer-modified asphalt binder to improve the stability between asphalt binder and polyethylene as well as reduce phase separation. First, the aging component of the prepared asphalt binder samples was evaluated using the attenuated total reflectance Fourier transform infrared spectrometer analysis. Then, the storage stability of asphalt binder samples was investigated by the frequency sweep test. The rutting resistance of asphalt binder samples was determined using the multiple stress creep recovery test, and finally, the fatigue performance of the rolling thin-film oven–aged asphalt binder samples was evaluated using the linear amplitude sweep test. The results revealed that, unlike the sulfur additive that did not have any beneficial effect on the HDPE-asphalt binder, the PPA increased the resistance of rutting, fatigue cracking, aging, and storage stability for the HDPE-asphalt binder.

Author Information

Zarroodi, Roozbeh
Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Naderi, Koorosh
Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran
Goodarzi, Mehdi Moazami
Department of Civil Engineering, Payame Noor University, Tehran, Iran
Nazari, Hossein
Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
Nejad, Fereidoon Moghadas
Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran
Pages: 14
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE20190804
ISSN: 0090-3973
DOI: 10.1520/JTE20190804