Skip to main content

Effects of Cement on CLAY barrier performance - phase II

Objective

Cements will be used intensively in radioactive waste repositories. During their degradation in time, in contact with geological pore water, they will release hyper-alkaline fluids rich in calcium and alkaline cations. This will induce geochemical transformations that will modify the containment properties of the different barriers (geological media and EBS, i.e. clay-based engineered barriers). ECOCLAY I identified major geochemical reactions between bentonite and cement. ECOCLAY II proposes to investigate aspects such as radionuclides sorption, kinetics of the geochemical reactions, coupled geochemistry / transport processes, conceptual and numerical modelling and performance assessment. The whole hyper-alkaline plume (EBS, clay and granite host rock) will be studied within the project. To do so, ECOCLAY II brings together the efforts of 8 European countries on this subject with an aim of supplementing studies.

Coordinator

NATIONAL RADIOACTIVE WASTE MANAGEMENT AGENCY OF FRANCE
Address
Rue Jean Monnet 1-7
92298 Chatenay Malabry
France

Participants (17)

AEA TECHNOLOGY PLC
United Kingdom
Address
Culham
OX14 3ED Abingdon
BELGIAN NUCLEAR RESEARCH CENTRE
Belgium
Address
200,Boeretang 200
2400 Mol
Bureau de Recherches Geologiques et Minieres
France
Address
Avenue Claude Guillemin 3
45060 Orleans
CLAY TECHNOLOGY AB
Sweden
Address
Ideon Research Centre Ole Roemers Vaeg 12D
Lund
CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS
Spain
Address
C/ Serrano Galvache S/n
28033 Madrid
EMPRESA NACIONAL DE RESIDUOS RADIOACTIVOS S.A.
Spain
Address
7,Emilio Vargas 7
28043 Madrid
GESELLSCHAFT FUER ANLAGEN- UND REAKTORSICHERHEIT (GRS) MBH
Germany
Address
Theodor-heuss-strasse 4
38011 Braunschweig
NATIONAL COOPERATIVE FOR THE DISPOSAL OF RADIOACTIVE WASTE
Switzerland
Address
Hardstrasse 73
5430 Wettingen
NATURAL ENVIRONMENT RESEARCH COUNCIL
United Kingdom
Address
Murchison House, West Mains Roads
EH9 3LA Edinburgh
PAUL SCHERRER INSTITUT
Switzerland
Address

5232 Villigen
POSIVA OY
Finland
Address
Töölönkatu 4
00100 Helsinki
SERCO LTD
United Kingdom
Address
The Quadrant 404, Birchwood Park
WA3 6AT Warrington
SVENSK KAERNBRAENSLEHANTERING AB
Sweden
Address
Brahegatan 47
5864 Stockholm
TECHNICAL RESEARCH CENTRE OF FINLAND
Finland
Address
3A,otakaari, 3 A
02044 Espoo
UNIVERSIDAD AUTONOMA DE MADRID
Spain
Address
Cantoblanco S/n
28049 Madrid
UNIVERSITY OF BERNE
Switzerland
Address
Baltzerstrasse 1
3012 Bern
UNIVERSITY OF HELSINKI
Finland
Address
1,A. I. Virtasen Aukio 1
00014 Helsinki