Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/47316
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Development of low-pH cementitious materials for HLRW repositories: Resistance against ground waters aggression |
Autor: | García Calvo, José Luis CSIC ORCID; Hidalgo, A.; Alonso, C. CSIC ORCID; Fernández Luco, L. | Palabras clave: | Low-pH cements Hydration (A) Long-term performance (C) Radioactive waste (E) |
Fecha de publicación: | 2010 | Editor: | Elsevier | Citación: | Cement and Concrete Research; Vol. 40; nº 8; págs. 1290-1297; (2010) | Resumen: | One of the most accepted engineering construction concepts of underground repositories for high radioactive waste considers the use of low-pH cementitious materials. This paper deals with the design of those based on Ordinary Portland Cements with high contents of silica fume and/or fly ashes that modify most of the concrete “standard” properties, the pore fluid composition and the microstructure of the hydrated products. Their resistance to long-term groundwater aggression is also evaluated. The results show that the use of OPC cement binders with high silica content produces low-pH pore waters and the microstructure of these cement pastes is different from the conventional OPC ones, generating C–S–H gels with lower CaO/SiO2 ratios that possibly bind alkali ions. Leaching tests show a good resistance of low-pH concretes against groundwater aggression although an altered front can be observed. | Versión del editor: | http://www.sciencedirect.com/science/article/pii/S0008884609003391 | URI: | http://hdl.handle.net/10261/47316 | ISSN: | 0008-8846 |
Aparece en las colecciones: | (CISDEM) Artículos |
Mostrar el registro completo
CORE Recommender
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.