Studies on Clay-Water System

(II-2) Stress-Strain Hysteresis of Clay-Water Mass

Abstract

Experiments with alternating torsional stresses on clay bars are described. The stress-strain hysteresis loops so obtained show that repeated cycles produce not only a softening but also a hardening of them which are apparently analogus to the thixotropy, dilatancy, and rheopexy which occur in clay slips. The “backlash” phenomenon is also discussed in detail, and some notices in working on jiggering are mentioned.