| abstract |
PROBLEM TO BE SOLVED: To obtain a cavity filling material having fluidity and consolidation property and excellent in water separation resistance, suitable for backfilling of a tunnel or the like, and filling of a back surface of a retaining wall or a revetment. SOLUTION Main products are fly ash, slag, incinerated ash and clay, industrial by-products such as earth and sand and silica sand generated in the field. Is blended at a predetermined ratio. A predetermined amount of bentonite is added thereto, a small amount of water-absorbing resin is added, and a plastic grout having flow characteristics, consolidation characteristics, and resistance to water according to the purpose is obtained by a blending method. By using this as a cavity filler or a backfill material, it is possible to reliably fill a tunnel or the like in the ground without being affected by groundwater. [Selection figure] None |