earticle

영어

The natural sand will be dried up within 30 years due to the great amount of consumption in making of construction materials. For conserving natural sand resources, the waste concrete can be recycled as a important construction materials.
Because recycled sand produced from the reprocessing of waste concrete is being spotlighted in the environmental and economic aspects. so, the recycled sand manufactured from the waste concrete has been taken a side view of concrete. But, the physical characteristics falls against the natural sand, the recycled sand concrete which uses this as well the various engineering quality including the compressive strength decreases. so. social, technical reliability is not used lowly at construction etc. It is used only molding. Consequently, the fundamental physical properties of the recycled sand and about fundamental physical properties of the recycled sand where the value becomes dying research leads and grasps verification leads about safely and in goal of the research the fact that will encourage a wide use the recycled sand. Experimental result, that quality recycled sand quality below standard the indolent putting out high quality recycled sand is visible the nature which gets near to the natural sand is serviceable with construction.