1. A series of UU tests were performed on similar specimens of clay. The following results were obtained. Test σ (kPa) (Adak (kPa) 1 100 102 2 200 98 3 300 100 Determine the undrained shear strength of the clay from these tests. Test 1. ust 2 2. CD tests were performed on a specimen of clay. The following results were obtained: Test af (kPa) (Agar (kPa) ou (kPa) 1 100 285 2 2pca 200 571 10 a) Draw the effective stress Mohr circles at failure and the failure envelope. Assuming the clay is normally consolidated (c'-0), determine the friction angle, . 400 130 2 8 18 11 n
b) If a CD test is performed on a similar specimen under a confining stress (03) of 300 kPa, calculate the deviatoric stress (Aca) at failure. Đại ban OSLA c) A CU test is performed on a similar specimen (i.e., same c' and ' as the CD test in part (a) and (b)) under an initial confining stress of 300kPa. Assuming A-0.9 for this specimen, calculate the deviatoric stress (Ada)r and the pore pressure (Aud)r at failure. 326
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!