Investigation of blending conditions effect on GTR dissolution and rheological properties of rubberized binders. (10th May 2020)

• Record Type: Journal Article
• Authors: Ziari, Hassan; Amini, Amir; Goli, Ahmad
• Is Part Of: Construction & building materials. Volume 242(2020)
• Publication Date: 2020-05-10
• Subjects: Rubberized binder -- Blending conditions -- GTR dissolution -- Rheological properties -- ANOVA analysis -- Binder rutting and fatigue performance; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2019.117828
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: The effects of blending conditions and GTR concentrations on rheological properties of rubberized binders are investigated. GTR extraction, Superpave tests, LAS and MSCR tests and ANOVA analysis are investigated and discussed. Blending temperature in increasing GTR dissolution is more significant than effect of other blending parameters. Blending parameters such as speed, time and temperature have significant effect on GTR dissolution in rubberized binders. Addition of GTR lead to an improving rutting resistance and fatigue behavior of binders. Abstract: Ground Tire Rubber (GTR) is one of the asphalt modifiers that enhances the performance properties of asphalt mixtures and helping to reduce environment pollutions. Improvement in the mechanical behavior of rubberized binders depends on the mechanism of interactions between GTR and base binder. The primary objective of this study is to evaluate the effect of GTR dissolution on rheological properties and performance properties of the asphalt binder. The effect of interaction between blending conditions and GTR concentrations were evaluated utilizing GTR extraction, Superpave tests, LAS, MSCR, and ANOVA method. The second objective is to determine the relationship between performance grade temperature and temperature susceptibility of rubberized binder considering the GTR dissolution factor. The results indicated that the influence of blending temperature in increasing GTR dissolution is more significant than the effect of other blending parameters. Furthermore, the addition of GTR leads to improving the rutting resistance and fatigue behavior of the asphalt binder. Finally, the result of ANOVA shows that the blending conditions have a significant effect on GTR dissolution in the rubberized binder.