Abstract
Due to high percentage elongation fracture (approximately 15∼20%), high density polyethylene is suitable for following to deformation of reinforced soil wall. It has reported that under confining effect the strain of geo-textile is less and strength is larger than under no confining effect. It is technically difficult to measure the strain at the break point in the fill. We are considering that it is safer to afford the elongation fracture for flexible structure of which wall is deformed to a few percentages. We report that we have done the measurement of behavior of 10m fill, the demolition test of reinforced soil wall, and the FEM simulation of large scale earthquake, in order to verify of reliability of reinforced soil wall being used high density polyethylene geo-grid and thin concrete panel