Abstract
This paper presents a series of the authors’ trial of (i) estimating the constant volume shear strength of compacted geo-materials based on the concept proposed by Iseda and Mizuno in 1971, (ii) constitutive modelling of geo-materials compacted at the construction sites of large fill-dams, high embankments and highway pavements, (iii) evaluating the pseudo-cohesion proposed by Schlosser and Long in 1973 and (iv) examining the performance of reinforced earth tructuresbyfield testsonlarge-scaled model structures. The trialof estimatingthe strengthof compacted geo-materials is found to be reliable through the tests on the full-scalled trial embankments. Constitutive modelling of compacted geo-materials are successfully carried out for the materials used in two large dams, three high embankments and in highway pavements. It is confirmed through a series of triaxial tests on sand specimens reinforced by placing thin films of aluminum, electrodeposited copper and polycarbonate that the pseudo-cohesion proposed by Schlosser and Long in 1973 does exist exactly in a way they described in their paper. The large-scaled model structures constructed in the field are found to be useful in checking the performance of reinforced earth subjected to static and dynamic loading.
