Abstract: Low bearing capacity, strength, swelling and shrinkage characteristics of the soil are the major cause for the settlements and failure of embankments, slopes and other civil engineering structures. Presently in India, especially in the case of state of Chhattisgarh ratio of coal ash utilization to generation is still less than 60% and therefore it becomes necessary to increase its utilization rate for the sustainable development. In the present experimental study strength and compaction characteristics of locally available soils by partial replacement of coal ash is studied. Proctor test is conducted for different modified energy levels and CBR test is conducted for the different percentages of coal ash to check its compatibility and suitability as a highway subgrade.

Keywords: Coal Ash; Strength; Compaction.

| DOI: 10.17148/IARJSET.2020.71012