Abstract

The Holocen sediments 3 2 Q and 2 3 2 Q - in Ho Chi Minh City, the thickness is 36.5m, always under the ground water table. The water contents, Wn, are more than the liquid limit. Present, the activity of dynamic loading of traffic, factories have being developed, especially shaking of earthquake in a few years ago, that unit now no research results about this matter. The first work studies about influence of the activity of dynamic loading caused by a concretion mass on the mechanical properties. Survey field shear strength of the soft ground in undisturbed and disturbed soil ground caused by the concretion mass. The depth of investigation is arange of 0.0 to 10 m. Results, the sensitivitis of Holocene sediments be from medium sensitivity to medium quick.