Determination of Rutting Resistance of SBS and Warm Asphalt Additive Binders by the MSCR Test

Abstract

The MasterLife PAV110 Warm Mix Asphalt (WMA) additive’s rutting resistance in pure and Styrene-ButadieneStyrene (SBS)-modified binders was examined using MSCR testing. Multiple Stress Creep Recovery (MSCR) tests were conducted on seven binders. The study’s findings indicated that the incorporation of WMA resulted in an increase in the Jnr values of both pure binders and binders modified with SBS at stress levels of 0.1 and 3.2 kPa. This finding implies that the occurrence of rutting will be negatively impacted. On the other hand, the performance level categorization showed that WMA additives had no impact on the performance levels of pure and SBS-modified binders. Since the Jnr and average percentage Recovery (R) values at 3.2 kPa, 1%, and 1.5% PAV110 additives exhibited similar properties, it was determined that the optimum usage rate in terms of cost was 1%.