Abstract
Marble dust generated during cutting, grinding, carving, and polishing is one of the significant sources of marble production. Due to its high production, it can be used as an alternative material and has been used as a filler replacement to retain outstanding usability. This study aims to assess the effectiveness of marble dust as filler in asphalt concrete. A mixed design was developed for asphalt concrete with marble dust. To assess the impact of various percentages of these industrial waste on the qualities of the asphalt filler matrix by contrasting it with the properties of the mix, including stone dust as filler, various tests like Marshall stability and flow, indirect tensile, wheel tracker and Resilience Modulus (RM) were carried out. The comparison results reveal that modified asphalt concrete has 1.63% more stability than normal concrete. Similarly, the indirect tensile test shows 23% more strength, the wheel tracker test shows low rutting depth for modified HMA and a 44% increase in MR. The bitumen extender marble dust infill reduces the ideal binder by 4.05%. As a result, marble dust can be used as a filler in asphalt concrete up to 4.5% with success, creating a stable, economical, and eco-friendly pavement.
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