Method for Manufacturing environment friendly construction materials

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PURPOSE : A method for preparing an environmentally-friendly solidified material is provided to improve intensity of solidified material by lowering ratio of water and cement. CONSTITUTION : A method for preparing an environmentally-friendly solidified material comprises : a step of making slurry using 45.49-60.38 weight% of soil, 34.16-36.25 weight% of water, 0.06-0.36 weight% of inorganic additive; a step of mixing 3.01-18.19 weight% of solidifying agent and 0.3-1.8 weight% of blast furnace slag to the slurry; a step of coagulating the mixture; a step of dehydrating the mixture; a step of molding the mixture to make solidified material; and a step of curing the solidified material.