Preparation and Characterization of Polyester Polyol Modified Bitumen for Pavement Applications

Authors : Gülşen Albayrak ARI, Serenay AKYOL, Muzaffer YAŞAR, Metin SORMAGİR, Savaş GÜRDAL, Emel BAŞKENT, Ramazan Oğuz CANIAZ, Refika ÇETİNTAŞ, Serhat ARCA, Elif KOCAMAN, Ziya KÖSTERELİ

Pages : 574-584

View : 17 | Download : 6

Publication Date : 2018-09-01

Article Type : Research Paper

Abstract :In this study, polymer modified bitumen insert ignore into journalissuearticles values(PMB); from polyester polyols was prepared by bisinsert ignore into journalissuearticles values(2-hydroxyethyl terephthalate); insert ignore into journalissuearticles values(BHET); which was obtained by glycolysis of Polyethylene terephthalate insert ignore into journalissuearticles values(PET); waste. The effect of polyester polyol structure on the rheological properties of PMB was investigated. Polyester polyols obtained by the reaction of various polyols and polycarboxylic acids. POL1, synthesized from BHET and adipic acid insert ignore into journalissuearticles values(AA);, were blended with the bitumen resulting in improved stiffness, rutting resistance and fatigue performance with respect to neat bitumen. Also, the synergistic effects of the polyester polyol addition into styrene-butadiene-styrene modified bitumen insert ignore into journalissuearticles values(SBS-Bitumen); were investigated where this reference mixture contains SBS loading of 3 % according to the weight of bitumen. Although the addition of POL1insert ignore into journalissuearticles values(1.3:1); into SBS:Bitumen mixture at 3:3:94 weight ratio didn’t alter the high temperature performance grade of PMB, POL1:SBS:Bitumen exhibited higher softening point, elastic recovery and rutting parameter than reference mixture. The early stage promising results of this study indicated the potential benefits of polyester polyol as bitumen modifier. Also, this study showed that the use of BHET obtained by PET waste as a starting material for polyester polyol synthesis could be an alternative way to utilize plastic waste.
Keywords : PET waste, Polymer modified bitumen