Water Content Influence on Properties of Red-Layers in Guangzhou Metro Line, China

Table 2

Direct shear test results with different water contents.

Contents	Group 1	Group 2	Group 3	Group 4	Group 5	Group 6	Group 7	Group 8
Water content (%)	9.99	13.16	16.92	17.27	18.348	20.308	28.226	37.551
Internal friction angle (°)	40.987	39.328	25.561	24.6447	23.623	10.238	1.946	1.356
Cohesion (kPa)	17.19	14.249	30.78	30.472	32.113	45.458	12.573	8.235