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Human beings can live the most healthy and happy. However, as the civilization has developed significantly, the people in the world pursues the convenience, and the people use concrete which is the mix of sand and pebbles with cement as construction material. However, mining aggregate has become the destruction of environment, and it is not sufficient, so we cannot use concrete no longer. So, we are going to use the soil which we can get easily and it is an optimal element for the health. However, the soil does not mix well with the concrete which is the main difficulty, so the soil hardener is a chemical which overcomes such problems. Rather than sand, we can form a good environment with new environment-friendly technologies which can pave the road, walking trails, forest trails like cement with soil.Environmental friendly soil high strength hardener was only used in the huge-scale construction, but it is applicable to the areas of pavement, trails, parking lots, forest trails, bike roads, soft ground, farm roads, barn ground, front yard, small roads, blocks, plates, environment friendly soil house, and Hwangto floors.