| 摘要 |
PROBLEM TO BE SOLVED: To obtain lightweight mixed soil for land-forming a permeable ground, by which the same stable simple execution as natural materials can be executed, by mixing vitreous foams obtained by adding a foaming material to vitreous waste-material powder and thermally treating the powder with sandy soil. SOLUTION: A foaming material is added to vitreous waste-material powder obtained by crushing a glass waste material such as bottle glass, plate glass or the like and thermally treated, and crushed stone-shaped vitreous foams 1 are acquired. Powder, in which a small amount of pulverized glass powder are blended to coarsely crushed glass powder, is preferable as the vitreous waste-material powder. The vitreous foams 1 are mixed with sandy soil 2 and spread all over as lightweight mixed soil 13, and rolled and compacted. Consequently, a permeable ground within a range of wet density ofρt=0.8-1.6 t/m3 can be land-formed. Accordingly, the stable simple execution of works can be conducted by the same usage as natural materials by utilizing a waste material.
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