| 摘要 |
PURPOSE:To obtain bentonite 21 for filling gap, having excellent transportation under pressure and ready removal after filling and back filling. CONSTITUTION:Bentonite comprising amounts of blended units of 260kg/m<3> water, 100kg/m<3> cement, 851kg/m<3> fine aggregate, 942kg/m<3> coarse aggregate, 25kg/m<3> bentonite and 0.25kg/m<3> admixture of poor blending, having excellent swelling properties and suspension dispersibility, useful for slurry process, is utilized and 15-28cm slump and 10-29kgf/m<2> compression strength are secured to improve viscosity and self supporting properties. |
