Community Research and Development Information Service - CORDIS

Abstract

Compacted expansive clays are proposed as engineered barriers in the disposal of heat-emitting nuclear waste in granite and clay. The in situ test Bacchus 2 dealt with the optimization and demonstration of an installation procedure for a clay-based material. Bacchus 2 was instrumented to enable a validation experiment of hydro-mechanical models for unsaturated clay-based materials. Total stress, pore-water pressure and water content have been measured on the backfill material and surrounding clays to observe the hydration process. Parameters measured in the backfill show clearly the hydration effect (increase in water content, pore water pressure and a redistribution of the mechanical stresses). The results of the natural hydration modelling carried out by UPC (Universidad Polytécnica de Cataluña) in the report EUR 16744 agree well with the in situ measurements. This report is written in English except for the contributions of ANDRA and CEA.

Additional information

Authors: VOLCKAERT G, SCK/CEN, Mol (BE);BERNIER F, SCK/CEN, Mol (BE);DARDAINE M, CEA (FR)
Bibliographic Reference: EUR 16860 EN/FR (1996) 213pp., FS, ECU 23.00
Availability: Available from the (2)
ISBN: ISBN 92-827-7761-8
Record Number: 199611095 / Last updated on: 1996-10-28
Category: PUBLICATION
Original language: en,fr
Available languages: en,fr