Physical properties and storage stability of geopolymer modified asphalt binder

This study was conducted to investigate the physical properties and storage stability of the 80/100 penetration grade asphalt modified with geopolymer. in this research,fly ash and alkali activators,namely sodium silicate (na2sio3) and sodium hydroxide (naoh),were used as geopolymer components. the penetration,ring and ball softening point,ductility,and viscosity tests were conducted to determine the physical properties of geopolymer modified asphalt (gma). five samples of asphalt binders with varying percentages of geopolymer,namely 0,3,5,7 and 9%,by weight of asphalt binder were studied. results show that geopolymer has good compatibility with asphalt binder. the addition of geopolymer into asphalt binder resulted in improved permanent deformation resistance of the modified binder compared to that of the conventional asphalt. in conclusion,geopolymer could be considered as a potential alternative in the modification of the properties of asphalt binder. © 2016 penerbit utm press. all rights reserved.