Study on Durability for Erosion of Cover Soil Made of Tsunami Sludge for Radiation-Contaminated Soil

It is already confirmed that Fiber-cement-stabilized soil is the best for the ground material because this soil has several features. However，in order to use this soil as cover soil for radiological contaminated soils in Fukushima Prefecture， the investigation on durability for erosion is indispensable. Therefore， the durability for erosion of fiber-cement-stabilized soil using tsunami sludge was experimentally investigated in this study. The experiment was carried out by using the submerged water jet erosion test apparatus manufactured according to Hanson et al. The critical shear stress for erosion and erodibility coefficient were measured. It was confirmed that the durability for erosion of fiber-cement-stabilized soil is much larger than the one of normal soil.