Waste printed circuit boards,as hazardous wastes,cause serious environmental pollution.In order to improve the efficiency of waste printed circuit boards,two kinds of waste powder with different particle sizes have been mixed into mortar to explore their effects on such...MORE Waste printed circuit boards,as hazardous wastes,cause serious environmental pollution.In order to improve the efficiency of waste printed circuit boards,two kinds of waste powder with different particle sizes have been mixed into mortar to explore their effects on such properties of cement mortar as compressive strength...