Thermo-hydro-mechanical behavior of clay rock for deep geological disposal of high-level radioactive waste

The Construction and Operation of Geological Disposal Facilities for High-level Radioactive Waste and Spent Fuel

A key challenge over the next decade for some national programmes and an important learning opportunity for many others will be the construction and operation of the first deep geological repositories for High Level Waste (HLW) and Spent Fuel (SF). As the orientation of work on disposal shifts from mainly research, development and demonstration to industrial implementation, waste management age...

Thermo-hydro-mechanical Coupling in Clay Barriers

A complete thermo-hydro-mechanical model is presented to tackle the complex coupling problems encountered in clay barriers. A detailed formulation coupling the heat, moisture (liquid water and water vapour) and, air transfer in a deformable unsaturated soil is given. The formulation of the AlonsoGens’s mechanical model for unsaturated soil is also incorporated. The sensitivity to some parameter...

Investigations of Near-field Thermal-hydrologic- Mechanical-chemical Models for Radioactive Waste Disposal in Clay/shale Rock

Preliminary laboratory thermo - hydro - mechanical characterization of Opalinus clay

1 INSTRODUCTION In the concept of geological radioactive waste disposal, argillite is being considered as a possible host rock in various countries such as France and Switzerland. This material is chosen thanks to its extremely low permeability that is required to limit the transfer of radioactive elements from the waste package towards the environment. During the construction and exploitation ...

Evaluation on Mechanical Stabilities of Clay-Sand Mixtures Used as Engineered Barrier for Radioactive Waste Disposal

In this study, natural bentonite was used as natural clay material and samples were taken from the Kalecik district in Ankara. In this research, bentonite is the subject of an analysis from standpoint of assessing the basic properties of engineered barriers with respect to the buffer material. Bentonite and sand mixtures were prepared for tests. Some of clay minerals give relatively higher hydr...