| 摘要 |
PROBLEM TO BE SOLVED: To conduct the stable simple execution of works by the same usage as natural materials by using a vitreous foam obtained by adding a foaming material to vitreous waste-material powder and thermally treating the powder as a banking material or a back-filling material. 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 treating the powder, and crushed stone-shaped vitreous foams 1, 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 spread all over as a banking material or a back-filling material, and rolled and compacted while aiming at dry density ofρd=0.3-0.5 t/m3. Accordingly, the waste material is utilized effectively, and lightweight soil can be executed stably and simply by the same usage as natural materials.
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