Effects of titanate coupling agent on engineering properties of asphalt binders and mixtures incorporating LLDPE-CaCO3 pellet

Authors

Mohd Rosli Mohd Hasan, Universiti Sains Malaysia
Zhanping You, Michigan Technological UniversityFollow
Mohd Khairul Idham Mohd Satar, Universiti Teknologi Malaysia
Muhammad Naqiuddin Mohd Warid, Universiti Teknologi Malaysia
Nurul Hidayah Mohd Kamaruddin, Universiti Tun Hussein Onn Malaysia
Dongdong Ge, Michigan Technological UniversityFollow
Ran Zhang, Chang’an University

Document Type

Article

Publication Date

6-24-2018

Department

Department of Civil, Environmental, and Geospatial Engineering

Abstract

This study was initiated to evaluate the performance of asphalt binders and mixtures incorporating linear low-density polyethylene- calcium carbonate (LLDPE-CaCO₃) pellet, either with or without titanate coupling agent. The detailed manufacturing process of modifier pellets was displayed. The coupling agent was used to enhance the cross-linking between materials by means of winding up covalent bonds or molecule chains, thus improving the performance of composites. In the preparation of modified bitumen, the preheated asphalt binder was mixed with the modifiers using a high shear mixer at 5000 rpm rotational speed for 45 min. Experimental works were conducted to evaluate the performance of asphalt binders in terms of volatile loss, viscosity, rutting potential, and low temperature cracking. Meanwhile, the asphalt mixtures were tested using the flow number test and tensile strength ratio (TSR) test. The addition of LLDPE-CaCO₃ modifiers and coupling agent does not significantly affect the volatile loss of modified asphalt binders. The addition of modifiers and coupling agent has significantly improved the resistance to permanent deformation of asphalt binders. Even though, the addition of LLDPE-CaCO₃ modifier and coupling agent remarkably increased the mixture stiffness that contributed to lower rutting potential, the resistance to low temperature cracking of asphalt binder was not adversely affected. The combination of 1% coupling agent with 3% PECC is optimum dosage for asphalt binder to have satisfactory performance in resistance to moisture damage and rutting.

Publisher's Statement

© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Publisher’s version of record: https://doi.org/10.3390/app8071029

Publication Title

Applied Sciences

Recommended Citation

Hasan, M. R., You, Z., Satar, M. I., Mohd Warid, M. N., Kamaruddin, N. H., Ge, D., & Zhang, R. (2018). Effects of titanate coupling agent on engineering properties of asphalt binders and mixtures incorporating LLDPE-CaCO3 pellet. Applied Sciences, 8(7), 1029. http://doi.org/10.3390/app8071029
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/1897

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Version

Publisher's PDF