Rheological properties of modified bitumen: Comparison of waste polymers’ performance
محل انتشار: فصلنامه علوم و فناوری ذرات، دوره: 1، شماره: 4
سال انتشار: 1394
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 454
فایل این مقاله در 9 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JPST-1-4_002
تاریخ نمایه سازی: 26 فروردین 1397
چکیده مقاله:
In this investigation, rheological properties of three different polymer-modified bitumen compounds containing recycled polyethylene terephthalate (R-PET), crumb rubber (CR) and poly (styrene-butadiene-styrene) (SBS) are evaluated and compared. The modified samples were tested by a dynamic shear rheometer (DSR) where complex modulus (G*), phase angle (δ) and rutting resistance (G*/ Sinδ) of specimens were measured at different temperatures. The obtained results show that the optimum rheological properties will be gained when 7% wt. of a modifier mixture containing R-PET/CR (90/10 weight ratio) is added to the bitumen. In comparison with un-modified bitumen, the one modified by the latter modifier shows phase angle shift 68.9 oC, complex modulus 2190 (Pa) and rutting resistance 2520 (Pa), at temperature 80 oC. Generally, addition of the polymeric modifier increases complex modulus, rutting resistance and rigidity of the bitumen while a little decrease in phase angle is also observed
کلیدواژه ها:
نویسندگان
Marzieh Habibi Karahrodi
Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
Omid Moini Jazani
Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
Ahmad Goli khorasgani
Faculty of Transportation, University of Isfahan, Isfahan, Iran
Hossein Riazi
Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran