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Thermo-Hydro Mechanical Column Experiment to Study Expansive Soil Behaviour

  • Tom Schanz
  • Long Nguyen-Tuan
  • Maria Datcheva
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

Understanding the heat transfer, water flow, and swelling pressure development in engineered clay barrier and the evaluation of the influence of these phenomena on the barrier performance are important issues in constructing nuclear waste repositories. The thermal, hydraulic and mechanical processes that take place within the clay barrier during its functioning lifetime are strongly coupled and therefore difficult for experimental and numerical modelling. In order to collect valuable experimental data for predicting the long term barrier functionality it is necessary to carry out tests with known and controlled initial and boundary conditions as well as to measure temperature, water content and mechanical stress along the specimen in a reliable and robust way. For this reason a new apparatus has been developed for laboratory testing of coupled thermo-hydro-mechanical behaviour of clay-buffer material under conditions close to the situation in the field. The main objectives of this paper are: (1) to describe the experimental device; (2) to introduce the sensors implemented and their calibration, and (3) to present the first experimental results obtained with the new equipment.

Keywords

Expansive Soil Nuclear Waste Repository Relative Humid Sensor Clay Barrier Geotechnical Test Journal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Foundation Engineering, Soil and Rock MechanicsRuhr-Universität BochumBochumGermany
  2. 2.Institute of MechanicsBulgarian Academy of Sciences Acad.SofiaBulgaria

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