Abstract
This paper investigated the mechanism and the degree of the aging effect on marine alluvial clay with a wide range of plasticity. In this study, consolidation paths using a logarithmic compression index Cc to p as well as to f are adopted because of little affectation with Ip. (1) Lower and upper yield points close to pc are clearly shown. The upper yield points is directly related with the initiation of failure of the soil structure. (2) The development of the aging effect influences fundamental compression shapes, the logarithmic compression index ratio Rc became larger with the increase of effective overburden pressure. (3) Standard compression type specific to Ip exists at critical effective overburden pressure. (4) Fundamental assumptions of Bjerrum's aging effect model are verified.
