Figure 7
From: New perspectives on preshearing history in granular soils

Test results on KFS with a critical friction angle \(\varphi _c\) = 33.1\(^\circ\): (a) without preshearing history of Test MT1 as reference test, (b) preshearing history in compression area of Test MT2 with mobilized friction angle \(\varphi _\text {mob}\) = 32.7\(^\circ\) and (c) preshearing history in extension area of Test MT3 with mobilized friction angle \(\varphi _\text {mob}\) = 16.9\(^\circ\). \(D_{r0}\) after sample preparation (moist tamping) and \(D_{r1}\) at start of drained stress paths.