Experimental investigation of corn cob ash on silty clay stabilized with calcium carbide

Weak soil leads to greater pavement thickness, to withstand under the prevailing traffic. In addition, various researchers have also claimed that weak subgrade strength could result in periodic maintenance to bear the increasing day to day traffic. Conclusively, roadway construction on weak soil could result in height of cost. In the present study, attempt has been made to stabilize the silty-clay soil (locally collected) by using corn-cob ash and calcium carbide in varying proportions. The alteration has shown positive response in terms of proctor, UCS and CBR test results. The Corn-cob ash is an agricultural waste, so concerns of disposal is on high priority, so the investigation can open new alternates for soil improvement and waste disposal. (C) 2020 Elsevier Ltd. All rights reserved.