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   Rheological Properties of Modified Bitumen: Comparison of Waste Polymers’ Performance  
   
نویسنده Habibi Karahrodi Marzieh ,Moini Jazani Omid ,Goli Khorasgani Ahmad ,Riazi Hossein
منبع Journal Of Particle Science And Technology - 2015 - دوره : 1 - شماره : 4 - صفحه:205 -213
چکیده    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 Bitumen ,Polymeric-Modified- Bitumen ,Rheology ,Crumb Rubber ,Poly (Ethylene Terephthalate)
آدرس University Of Isfahan, Faculty Of Engineering, Department Of Chemical Engineering, ایران, University Of Isfahan, Faculty Of Engineering, Department Of Chemical Engineering, ایران, University Of Isfahan, Faculty Of Transportation, ایران, Amirkabir University Of Technology, Department Of Polymer Engineering And Color Technology, ایران
پست الکترونیکی riazi66hossein@gmail.com
 
     
   
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