Evaluation of asphalt concrete mixtures for railway track

In this study, the performance of three asphalt concrete mixtures for railway track using three different asphalt binders which are PG64-22, crumb rubber modified (CRM) asphalt binder, and styrene-butadiene-styrene (SBS) modified asphalt binder was investigated in terms of moisture susceptibility, permanent deformation, and fatigue cracking of asphalt concrete mixture. Dynamic modulus and uniaxial creep test were conducted to characterize the material properties of asphalt mixtures. The results indicate that asphalt mixtures containing crumb rubber and SBS show better performance compare with the PG64-22 binder.