2011 Volume 67 Issue 4 Pages 488-499
In order to examine the mechanism of unsaturated sandy slope due to rainfall infiltration, suction unloading test and absorbing tests under anisotropic stress condition are implemented for sandy specimens. Water increasing ratio during each absorbing st ep of absorbing test is different from that of suction unloading test. Deviator and volumetric strain increasing rate at each absorbing step are almost linear with water content increasing rate at the step. Moreover, they have clear correlation with suction-stress increment rate at the step. It suggests that strain increment during absorbing process has unique relation with net principal stress increment corr ected with suction-stress during the process.
