Effects of Gilsonite on Performance Properties of Bitumen

The effectiveness of natural Gilsonite on the performance properties modified bitumens was studied. Three samples having different ratios that are 6%, 8% and 10% by weight base bitumen which PG 64-16 grade were prepared. physical storage stabilities four investigated means conventional tests. short-term long-term aging processes conducted with rolling thin oven pressure vessel tests, respectively. Rheological examined Superpave tests such as rotational viscosity, dynamic shear rheometer bending beam rheometer. After rheological study, low high temperature classes determined specification. results showed Gilsonite-modified provide improvement in bitumen, found highly compatible bitumen. additive significantly increased stiffness viscosity improved resistance against fatigue cracking rutting without causing a reduction thermal