P.Sravanthi, K.Vasantha, T.Sravani, V.Manjula, Ch.Nikshitha 02 08 The incorporation of nonconventional fillers in asphalt concrete mixtures has become an emerging research trend aimed at improving pavement performance and promoting sustainable construction practices Traditionally fillers such as limestone dust fly ash and Portland cement have been widely used to fill voids increase the density and improve the binding of bitumen with aggregates in asphalt mixtures However the continuous extraction of conventional fillers coupled with the rising demand for highway infrastructure has created significant environmental and economic concerns Consequently attention has shifted toward utilizing alternative wastederived materials such as marble dust granite slurry ceramic waste powder steel slag brick dust glass powder quarry fines and rice husk ash as nonconventional fillers in asphalt concrete These materials when finely ground and incorporated into mixtures have demonstrated the potential to improve Marshall stability moisture susceptibility rutting resistance fatigue life and overall structural durability of pavements Additionally their use contributes to waste minimization and the circular economy by recycling large volumes of industrial and agricultural byproducts that would otherwise pose disposal challenges Studies highlight that nonconventional fillers can also improve costeffectiveness in road projects by reducing reliance on natural resources while achieving comparable or superior performance to traditional fillers This paper reviews the potential of using nonconventional fillers in asphalt concrete mixtures focusing on their mechanical environmental and economic benefits with the aim of establishing their viability in modern pavement engineering Copyright (c) Journal of Science Engineering Technology and Management Science. All rights reserved 2026