Abstract
Recent development of new geosynthetics such as composite fabrics has been able to construct steep earthfill used high water content volcanic cohesive soils such as Kanto loam and/or even construction by-products which have never been used as fill materials. Recent developed composite fabric has almost the same tensile strength of geogrid and of course drainage effect. However, current design method of the steep reinforce earthfill with nonwoven fabric has not considered its reinforced effect and strength increase of cohesive soil by consolidation. Therefore, this paper proposes a new design method of a steep reinforced earthfill taking strength increase of high water content volcanic cohesive soil by consolidation, A characteristics of soil-fabric interface and reinforced effect of composite fabric into account.
