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.

Programme(s)

• FP5-EAECTP C - Research and training programme (Euratom) in the field of nuclear energy (1998 to 2002)

Topic(s)

• 2.1.2.-2.1.5 - Long-term behaviour of repository systems

Funding Scheme

CSC - Cost-sharing contracts

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