Temperature sensitivity and performance evaluation of asphalt cement incorporating different types of waste polymers

Authors : Mahmoud ENIEB, Ahmed ELTWATİ, Mohammed Abbas ALJUMAİLİ

Pages : 0-0

Doi:10.53635/jit.984159

View : 19 | Download : 11

Publication Date : 2021-12-31

Article Type : Research Paper

Abstract :There is significant evidence that utilizing polymers improves asphalt cement characteristics, preserve the environment, and increases industrial-economic benefits. Consequently, the use of such modifier in asphalt cements via sustainable technology is strongly encouraged. The major goal of this research is to study the effect of modified asphalt cement with crumb rubber insert ignore into journalissuearticles values(CR); insert ignore into journalissuearticles values(10%, 15%, and 20% CR); and recycled polyethylene terephthalate insert ignore into journalissuearticles values(rPET); insert ignore into journalissuearticles values(1.5%, and 2.5% rPET); on the physical and rheological characteristics of asphalt cements. Asphalt cement experiments such as softening point, penetration, and rotational viscosity insert ignore into journalissuearticles values(RV);, were performed on both the virgin and modified asphalt cements. The effect of CR and rPET on the temperature sensitivity of the asphalt cement was also evaluated by checking the penetration index insert ignore into journalissuearticles values(PI);, penetration viscosity number insert ignore into journalissuearticles values(PVN);, viscosity-temperature sensitivity insert ignore into journalissuearticles values(VTS);, activation energy flow methods insert ignore into journalissuearticles values(AE); of all the modified asphalt cements. The rutting index insert ignore into journalissuearticles values(G*/sin δ); was calculated using Bari and Witczak model. The findings revealed that the addition of CR and rPET in the asphalt cement reduced the temperature sensitivity and enhanced the rheological characteristics of the asphalt cements. Moreover, incorporating the CR and rPET into virgin asphalt cements increased the high temperature performance of all percentage of CR and 2.5% WP modified asphalt. There was a considerable correlation between temperature sensitivity methods; PI, PVN, VTS, and AE. Finally, virgin asphalt modified with CR is better than rPET.
Keywords : Crumb rubber CR, High temperature performance grading, Polyethylene terephthalate PET, Rheological physical properties, Temperature sensitivity