Undrained response of mining sand with fines contents

This paper describes an experimental study on mining sand containing plastic fines to investigate pre-failure and failure characteristics of suc mixtures under monotonic undrained compression triaxial tests. The results reveal that undrained shear strength, soil modulus and pore pressure decrease when clay content was increased. It was also found that the tested materials were overconsolidated by the fact that normalized shear strength and soil modulus depends on initial confining stress.