We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Investigating the Potential Barrier Function of Nanostructured Materials Formed in Engineered Barrier Systems (EBS) Designed for Nuclear Waste Isolation.
- Authors
Cuevas, Jaime; Ruiz, Ana Isabel; Fernández, Raúl
- Abstract
Abstract: Clay and cement are known nano‐colloids originating from natural processes or traditional materials technology. Currently, they are used together as part of the engineered barrier system (EBS) to isolate high‐level nuclear waste (HLW) metallic containers in deep geological repositories (DGR). The EBS should prevent radionuclide (RN) migration into the biosphere until the canisters fail, which is not expected for approximately 103 years. The interactions of cementitious materials with bentonite swelling clay have been the scope of our research team at the Autonomous University of Madrid (UAM) with participation in several European Union (EU) projects from 1998 up to now. Here, we describe the mineral and chemical nature and microstructure of the alteration rim generated by the contact between concrete and bentonite. Its ability to buffer the surrounding chemical environment may have potential for further protection against RN migration.
- Subjects
ENGINEERED barrier systems (Waste disposal); NANOSTRUCTURED materials; POTENTIAL barrier; RADIOACTIVE wastes; RADIOISOTOPES; BENTONITE
- Publication
Chemical Record, 2018, Vol 18, Issue 7/8, p1065
- ISSN
1527-8999
- Publication type
Article
- DOI
10.1002/tcr.201700094