CURED MATERIAL OF SOIL, INDUSTRIAL WASTE, SEA SAND AND DESERT SAND AND METHOD OF PREPARING THE SAM

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The disclosure provides a curing composition including 20 to 32 parts by weight of magnesium chloride, 20 to 32 parts by weight of sodium chloride, 15 to 28 parts by weight potassium chloride, 10 to 19 parts by weight of calcium chloride, 2 to 8 parts by weight of sodium sulfate, 1 to 10 parts by weight of sodium triphosphate, and 1.5 to 7.0 parts by weight of sodium lignosulfonate. The disclosure also provides a cured material including the curing composition, a mixture of one or more selected from the group consisting of soil, industrial waste, sea sand and desert sand, and a cement. The disclosure provides a method of preparing the cured material by mixing the curing composition, the mixture including at least one selected from the group consisting of soil, industrial waste, sea sand and desert sand; and the cement. The disclosure also provides a method of preparing the cured material by using the curing composition. According to the curing method of the disclosure, the density, strength, and elasticity of the cured material are increased, the durability of the cured material are improved, and the curing time for the cured material of the soil, the industrial waste, these a sand and the desert sand is reduced, so that the cured material is used as an alternative material to building stones in construction work or engineering works. In addition, the cured material is prepared by using soil existing at the construction site, so the cured material is efficient in terms of economy and natural environment protection. The cured material is used as a material for construction work or engineering works without limitations. In particular, the cured material is used as a landfill material for a port-hinterland, a material for constructing a wharf, a base material for a road, a sub-base material for the road, a building material for a core wall of a river bank and an earth fill dam, and a soft ground improvement material.