Sharif University of Technology Scientia Iranica 1026-3098 20 6 2013 12 01 Rheological master curves for modified asphalt binders Rheological master curves for modified asphalt binders 1654 1661 1538 EN Seyed Mohammad Asgharzadeh Department of Civil Engineering, Sharif University of Technology, Tehran, Iran Nader Tabatabaee Department of Civil Engineering, Sharif University of Technology, Tehran, Iran Journal Article 2013 07 31 Modified bitumen enhances the performance properties of asphalt mixtures. A number of studies in the last decade have evaluated the performance properties of modified binders at different service temperatures. It is however possible to evaluate some modified binder time-temperature characteristics and performance properties through their rheological master curves. In this research, styrene butadiene styrene, ethylene vinyl acetate, polyphosphoric acid and crumb rubber were used to modify a PG58-22 base binder. Rheological master curves for |G*| and phase angles of these binders were generated using data from the dynamic shear rheometerand bending beam rheometerat temperatures ranging from -30℃to about 88℃. The rheological interpretation of the results indicated improved high and low temperature properties and reduced temperature susceptibility for most of the modified binders. A comparison of the modified binders was done based on the visual inspection of master curves for different temperature ranges. https://scientiairanica.sharif.edu/article_1538_c2c21cd41383d5740d15dd00bc819af0.pdf