LAUSR

Concerning on the static liquefaction properties of an industrial cargo, iron ore fines (IOF), undrained monotonic behaviors of a type of IOF are revealed through conducting triaxial compression tests. It is found that IOF exhibits some similar behaviors as those of common sandy soils, while some very unusual behaviors are also observed. All IOF specimens with compaction degree of 84%-95% and confining pressure of 50 kPa -200 kPa exhibit dilative behavior from the beginning of the axial loading until the deviator stresses reached their peaks ( q pk ), then the dilative behavior transforms to the contractive one, and the contractive behavior continues until reaching the residual stress without observation of phase transformation and quasi steady state. These behaviors may rarely observed or only observed partially on certain density conditions for common sandy soils. More studies may be very necessary since these unusual behaviors imply that flow failure, similar to the undrained monotonic b...