Muthanna Journal of Engineering and Technology
Volume (12), Issue (2), Year (30 December 2024), Pages (121-126)
DOI:10.52113/3/eng/mjet/2024-12-02/121-126
Research Article By:
Atheer Muhammed Ali
Corresponding author E-mail: atheer.muhammed@mu.edu.iq
ABSTRACT
Warm mix asphalt (WMA) binders with varying amounts of Sasobit additive are made using two kinds of asphalt binders (PEN80-100 and 60-70). The Sasobit content was from 0.4% to 2.0%, with a range of 0.4 by mass of asphalt binder. Penetration, Rotational Viscosity (RV), and Dynamic Shear Rheometer (DSR) tests were performed. In addition, the Rolling Thin Film Oven (RTFO) and the Pressure Aging Vessel (PAV) tests were carried out to simulate the short-term and long-term aging of asphalt binder, respectively. Furthermore, for both asphalt binders, the complex shear modulus (G*) was determined in order to calculate the rutting factor (G*/SinĪ“) and fatigue factor (G*. SinĪ“). The results obtained reveal that, the asphalt performs better at higher temperatures and worse at lower ones. Because excessive amounts of Sasobit will negatively affect the asphalt binder, it should be added to the asphalt binder at a mass percentage of no more than 2%.
Keywords: Asphalt binders, Dynamic Shear Rheometer, Fatigue factor, Rolling Thin Film Oven, Warm mix asphalt.