Thin layer shearing of a highly plastic clay

K. Balthasar, G. Gudehus, M. Külzer, A. B. Libreros Bertini
2006 Nonlinear Processes in Geophysics  
<p><strong>Abstract.</strong> Shearing tests with a thin layer of clay between filter slabs render possible large and cyclic deformations with drainage. In the pressure range of 100 kPa they serve to validated visco-hypoplastic constitutive relations. This theory is also confirmed by tests with up to 14 MPa and super-imposed anti-plane cycles. After this kind of seismic disturbance the clay stabilizes if the ratio of permanent stresses is undercritical. Otherwise a spontaneous acceleration
more » ... s after a delay. This could help to understand critical phenomena with clay smears in faults.</p>
doi:10.5194/npg-13-671-2006 fatcat:qvrx73b6yjbljk63acbsbnnb4i