Publication Abstract

Proceedings - Fifth International Conference & Exhibition on Piling and Deep Foundations, 1994, Bruges, Belgium, (DFI)

Deep soil improvement by rammed stone columns - two case histories for large diameter storage tanks
F. De Cock & S. D'hoore

The paper describes the behavior of the soil improvement with rammed stone columns, used for two large diameter storage tank projects in Belgium. The subsoil to be treated consisted mainly of very soft organic clays (cu of 10-20 kPa) for case A, respectively sandy silts to silty sands for case B. In both cases, detailed measurements have been performed, such as: in situ soil tests (CPT, DMT and PMT) before and after execution of the columns, large diameter plate loading tests on single columns with measurement of the stress distribution under the loading plate, as well as settlement registrations under the tank using extensometers and horizontal inclinometer tubes of hydrostatic profile gauges under the tank bottom. Comparisons of the revealed results with existing design methods for bearing capacity and settlement behavior are also included.

 article #848; publication #36 (IC-1994)