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.
Fields of science
- engineering and technologyother engineering and technologiesnuclear engineeringnuclear waste management
- natural sciencesearth and related environmental sciencesgeochemistry
- natural scienceschemical sciencesinorganic chemistryalkaline earth metals
- natural scienceschemical sciencesnuclear chemistryradiation chemistry
Programme(s)
Call for proposal
Data not availableFunding Scheme
CSC - Cost-sharing contractsCoordinator
92298 CHATENAY MALABRY
France
See on map
Participants (17)
OX14 3ED ABINGDON
See on map
2400 MOL
See on map
45060 ORLEANS
See on map
LUND
See on map
28033 MADRID
See on map
28043 MADRID
See on map
38011 BRAUNSCHWEIG
See on map
5430 WETTINGEN
See on map
EH9 3LA EDINBURGH
See on map
5232 VILLIGEN
See on map
00100 HELSINKI
See on map
WA3 6AT WARRINGTON
See on map
5864 STOCKHOLM
See on map
02044 ESPOO
See on map
28049 MADRID
See on map
3012 BERN
See on map
00014 HELSINKI
See on map