Study on Particle Loss during Dissolution Based on Extreme Stress Condition

Abstract

The loss process of particles in the soil contains erosion, degradation and dissolution. Either way, caused changes in the inner system of the soil. The intention of this article is to investigate the change of soil volume under particular stress condition. Sand and salt mixture were prepared in this test, which stands for small particles, as test stuff to imitate real sandy soil. The experiment was carried out in an improved consolidator. As for this test, vertical additional stress was used as the variable, as for this experiment, the stress was the maximum value 1000KPa and the minimum value 10KPa, respectively. The experiment was divided by stages: load stage and dissolve stage, the volumetric variation in the facility was recorded by a software called DS7. The results show that the variation of volume was due to total volume variation and dissolution is much more than the volume change in minimal stress. When vertical stress greatly Λ value is 0.25, and tiny Λ value is 0.14. According to the previous laboratory finding and theory of strong chain, the experimental conclusion are analyzed theoretically.