Sawdust ash
Asphalt concrete
Moisture damage
Resilient modulus. Permanent
deformation
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Many waste materials can be repurposed
effectively within asphalt concrete to enhance the
performance and sustainability of pavement. One
of these waste materials is sawdust ash (SDA). This
study explores the beneficial use of SDA as a substitute
for limestone dust (LD) mineral filler in asphalt
concrete. The replacement rate was 0%, 15%, 30%,
45%, and 60% by weight of total mineral filler. Scanning
electron microscopy (SEM) was employed to
assess the surface morphology of Sawdust (SD),
SDA, and LD. In addition, a series of tests, including
Marshall stability and flow, indirect tensile strength,moisture susceptibility, and repeated uniaxial loading
tests, were conducted to examine the performance
characteristics of asphalt mixtures of diffe
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