Correlation between the Rheological Properties of Asphalt Mortar and the High-Temperature Performance of Asphalt Mixture

The performance of an asphalt mixture is significantly affected by the properties its mortar, which consists binder, mineral fillers, fine aggregates and air voids. aim this work was to evaluate correlations between high-temperature rheological corresponding mortar. multisequence repeated loading (MSRL) test used estimate mixture. Six different gradations, AC-13, SMA-13, SUP-13, AC-20, SUP-20 AC-25, two styrene–butadiene–styrene (SBS)-modified binders were considered prepare specimens. gradations types mortars consistent with their mixtures. A modified multiple-stress creep–recovery (MSCR) proposed for evaluating mortar a dynamic shear rheometer (DSR). Based on basic form Hirsh model, multiple regression model established, coefficient determination (R-square) 0.96. response presented great correlation behaviour In addition, MSCR indicators (nonrecoverable compliance percent recovery) obtained at 12.8 kPa creep stress represented status in well. Therefore, mechanical behaviours high temperature could be accurately predicted coarse aggregate parameters.