TY - JOUR ID - 1538 TI - Rheological master curves for modified asphalt binders JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Asgharzadeh, Seyed Mohammad AU - Tabatabaee, Nader AD - Department of Civil Engineering, Sharif University of Technology, Tehran, Iran Y1 - 2013 PY - 2013 VL - 20 IS - 6 SP - 1654 EP - 1661 KW - Modified binder KW - Complex modulus KW - Phase angle KW - Rheological master curve KW - Pavement performance DO - N2 - 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. UR - https://scientiairanica.sharif.edu/article_1538.html L1 - https://scientiairanica.sharif.edu/article_1538_c2c21cd41383d5740d15dd00bc819af0.pdf ER -