Abstract: “The study presents a series of experimental study using sand with fly ash- lime mixtures at various percentages. Increase in the amount of fly ash results in an environmental problem in many regions of the world. Fly ash is effectively used in engineering applications in some countries, and thereby reduces the potential impact on the environment. Lime is used to bind sand mixed with fly ash in this research. Fly ash used during the experimental works is identified as class F. Some engineering behaviour of sand mixed with fly ash- lime samples was characterized in oedometer, permeability, compaction, and CBR testing set ups. Significant modifications in compression index (Cc), void ratio (e), permeability (k), dry unit weight (γdry), optimum water contents (wopt), and CBR values were observed by a series of experimental results on the sand with 5% lime by various fly ash mix ratios (15%, 20% and 25% by weight).”

Keywords: Sand, fly ash, lime, oedometer, permeability, compaction, CBR testing