Modeling Unsaturated Soil Response under Suction-Controlled True Triaxial Stress Paths

Unsaturated Soils: Research and Applications

“…All tests were conducted on statically compacted samples of clayey sand (SP-SC soil) under constant-suction states, s = u a = 20, 100, or 200 kPa, and monotonic deviatoric-stress application rate of 8 kPa/h. A detailed description is given by Hoyos et al (2012). The slope M(s) of all critical state lines are reasonably constant, in agreement with the BBM.…”

Bounding surface‐based modeling of compacted silty sand exhibiting suction dependent postpeak strain softening

“…Further details regarding the explicit, step by step integration of BBM constitutive relations are given by Macari et al and Hoyos et al Also, implementation of BBM theory to calibrate the essential constitutive model parameter via experimental tests can be obtained from Patil . Complementary simulations using the BBM have also been included, alongside BS model predictions, in order to get further enlightening insights into some of the main limitations and challenges facing both frameworks within the context of the experimental evidence resulting from the present research effort.…”

“…In this study, the constitutive parameters postulated by both the BBM and the BSM frameworks were experimentally calibrated from the series of suction-controlled triaxial tests (Tables 1 and 2) and then used for predicting compacted SM response under suction-controlled axisymmetric shearing response at constant matric suction states varying from 50 to 750 kPa. Further details regarding the explicit, step by step integration of BBM constitutive relations are given by Macari et al 41 and Hoyos et al 42 Also, implementation of BBM theory to calibrate the essential constitutive model parameter via experimental tests can be obtained from Patil. 28 Complementary simulations using the BBM have also been included, alongside BS model predictions, in order to get further enlightening insights into some of the main limitations and challenges facing both frameworks within the context of the experimental evidence resulting from the present research effort.…”

Calculation of Tangent Modulus of Soils under Different Stress Paths

“…Ng [7] pointed out that the mechanical behaviors of many soils, such as stiff clays, depend on their current effective-stress states and stress history. Other researchers [8][9][10][11][12][13][14] have also carried out a series of stress-path triaxial tests and verified the path dependency of soil.…”