Fine particles production in sand under triaxial compression

Abstract

An experimental study, carried out in laboratory using a triaxial apparatus, proposes toevaluate the influence of grain size, grain shape and confining stress in fine particles production insand specimen subjected to triaxial loading. 16 triaxial tests were conducted on specimens of aninitial density index of 0.90 using the pluviation technique, with three different sands and underinitial confining pressure of 100, 400, 800 and 1200 kPa. The experimental results show that thefine particles production is considerably affected by confining stresses, even at low values (100kPa), and also by grain geometry. The experimental results show also that the fine particlesproduction increase with the strain level during the shearing test.