Community Research and Development Information Service - CORDIS


Temperature tests in Mol underground laboratory were part of a contract involving the study of the long term behaviour of deep underground clay. The purpose of these experiments, carried out in horizontal boreholes, was to study the mechanical behaviour of the Boom clay submitted to an increase of temperature. Heating dilatometers had to be designed for the project, in order to maintain the borehole walls at a pressure of 50 bars and a temperature of 80 C. The present report describes the study and the design of the most difficult technical point necessary for the experiment, which was the packer of the heating dilatometers. This study was concerned with the selection of rubber material, the nature and arrangement of frame as well as improvement of the fastening of the packer on the dilatometer body. The large number of tests which have been necessary on rubber samples as well as on complete packers are also described.

Additional information

Authors: LAVIGUERIE R, BRGM, Orléans (FR)
Bibliographic Reference: EUR 14692 FR (1993) 60 pp., FS, ECU 8.50
Availability: (2)
ISBN: ISBN 92-826-5970-4
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