Chala, G., Quezon, E.T., Mekonnen, E. and Ararsa, W. 2020. EFFECTS ON MODIFIED PROPERTIES OF EXPANSIVE CLAY SOIL USING WASTE HOLLOW CONCRETE BLOCK (HCB) AND CEMENT PLASTER WASTE MATERIALS FOR SUBGRADE CONSTRUCTION. International Journal of Research -GRANTHAALAYAH. 8, 3 (Mar. 2020), 342–347. DOI:https://doi.org/10.29121/granthaalayah.v8.i3.2020.168.