Investigation into the compression behaviour of unsaturated damaged Callovo-Oxfordian claystone

Oedometric compression and swelling behaviour of the Callovo-Oxfordian argillite

The Callovo-Oxfordian (COx) argillite is a possible host rock for radioactive waste disposal in which the ANDRA underground laboratory of Bure (East of France) has been excavated. In this paper some aspects of the volume change behaviour of the COx argillite are investigated. To do so, high pressure oedometers with a maximum capacity of 113 MPa have been used. In a first stage, swelling tests w...

Investigating the Swelling Pressure of 1 Compacted Crushed - Callovo - Oxfordian Claystone

A laboratory investigation of thermally induced pore

1 pressures in the Callovo-Oxfordian Claystone 2 3 M. Mohajerani, P. Delage, J. Sulem, M. Monfared, A.M. Tang, B. Gatmiri 4 5 1. Ecole des Ponts ParisTech, UR Navier/CERMES, 6-8 av. B. Pascal, F 77455 Marne la Vallée cdx 2 6 2. ANDRA, Châtenay Malabry 7 8 9 International Journal of Rock Mechanics and Mining Sciences, 2012, vol. 52, 112-121, 10 doi:10.1016/j.ijrmms.2012.02.012. 11 12 13 Abstract...

Preferred Orientations and Anisotropy in Shales: Callovo-oxfordian Shale (france) and Opalinus Clay (switzerland)

Anisotropy in clay-rich sedimentary rocks is receiving increasing attention. Seismic anisotropy is essential in the prospecting for petroleum deposits. Anisotropy of diffusion has become relevant for environmental contaminants, including nuclear waste. In both cases, the orientation of component minerals is a critical ingredient and, largely because of small grain size and poor crystallinity, t...

An investigation into a Geocell-reinforced Slope in The Unsaturated Numerical Model

Considering unsaturation conditions of soil significantly helps to produce relatively real results. Numerical methods have been assumed as conventional methods in soil mechanics to examine soil behavior. However, the accuracy of numerical methods dramatically depends on applying the appropriate behavioral model to solve problems. One of the known elastoplastic models for unsaturated soils i...