AN EXPERIMENTAL STUDY ON FLUID PROPERTIES FOR LIQUEFIED-SAND DURING ITS FLOW

Abstract

The author investigated into the flow characteristics of liquefied sand by flow tests of model grounds under 1 g and centrifuge conditions. The following results were obtained : 1) The liquefied sand behaves as a non-Newtonian flow (non-linear viscous flow, psedo-plastic flow or Bingham flow). The viscosity of the liquefied sand decreases with an increase of the shear strain velocity. 2) It was found from the 1 g condition test, that the viscosity of the liquefied sand increases in proportion with 1.27-1.63 exponents of the thickness of the model ground. 3) The viscosity was found to be proportional with 1.56-1.74 exponents of the overburden pressure.