Creep property of undisturbed and reconstituted Japanese clay was presented based on drained triaxial compression tests. Creep tests were performed several times during monotonic primary loading
unloading and reloading. Test results show that: (1) the amount of creep deformation during monotonic primary loading depends on strain rate before creep
creep stress level
and creep time; (2) during monotonic primary loading
the stiffness increasing magnificently shortly after creep; (3) the direction of creep will change from positive creep; to neutral creep and negative creep during unloading