Abstract
The variation of engineering properties (i. e., Attedoerg limits, grain size distribution, undrained shear strength and elastic shear modulus) of Pleistocene clay (Ma 12) was examined by using a 85cm long sample retrieved at the construction site of Kobe Airport. In this experimental study, a direct shear box apparatus equipped with bender elements was newly developed so as to examine both strength and elastic stiffness of the clay sample. It was found that physical and mechanical properties were highly uniform, implying little variations of the soil mineralogy with ageing effects over 1m depth.
