Abstract In order to improve the mechanical strength of cement soil while reducing the environmental hazards associated with the disposal of steel slag (SS) and rice husk, this study investigates the effects of SS (with addition ratios of 0%, 5%, 10%, 15%, and 20% by dry soil mass) and rice husk biochar (RHB) (with addition ratios of 0%, 3%, 6%, 9%, and 12% by dry soil mass) on the mechanical strength and microstructure of cement soil through unconfined compressive strength (UCS) tests,...
