Effect of lime and cement fillers on moisture susceptibility of cold mix asphalt

Cold mix asphalt (CMA) has many economic and environmental benefits but its higher moisture susceptibility reduce its use to minor construction and repairing work. To increase the field implementation of CMA, it is very necessary to reduce its moisture susceptibility. So present study examines the effect of lime and cement filler on the moisture susceptibility of CMA. In the study, lime and cement fillers were used in varying proportions i.e. 1% to 5%. Based on volumetric properties and minimum emulsion content criteria, 2% was found to be optimum content for both lime and cement fillers. From Marshall stability, retained Marshall stability, Indirect tensile strength, and Tensile strength ratio values it was found that both fillers considerably improve moisture susceptibility of cold mixes. Energy consumption and cost comparison further concluded that as compared to HMA, incorporation of cement and lime fillers in cold mixes results in economic and environment-friendly mixes.