Performance analysis of nano modified bitumen and hot mix asphalt

As a result, better performance was obtained by SiO2dopedCNT modification. Performance Grade (PG) of all modified bitumen was determined as PG 64-22 except MWCNT modified bitumen at the content of 1% (which was PG 58-22). OBCs were decreased by modification. All nano modified hot mix asphalt samples were determined as high resistive to moisture compared to reference sample except samples modified with SiO2dopedCNT at the content of 5%. Homogenous mixture was obtained according to scanning electron microscopy results. It was found that the agglomeration of nano materials is mostly lower than 4 μm in the mixtures.