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Garcia Calvo, Jose Luis, Hidalgo, A., Fernandez Luco, L. and Alonso Alonso, Maria Cruz (2010). Development of low-pH cementitious materials for HLRW repositories. Resistance against ground waters aggression. "Cement and Concrete Research", v. 40 (n. 8); pp. 1290-1297. ISSN 0008-8846. https://doi.org/10.1016/j.cemconres.2009.11.008.
Title: | Development of low-pH cementitious materials for HLRW repositories. Resistance against ground waters aggression |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | Cement and Concrete Research |
Date: | August 2010 |
ISSN: | 0008-8846 |
Volume: | 40 |
Subjects: | |
Freetext Keywords: | Low-pH cements; Hydration (A); Long-term performance (C); Radioactive waste (E) |
Faculty: | E.T.S.I. Caminos, Canales y Puertos (UPM) |
Department: | Ingeniería Civil: Construcción |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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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
Item ID: | 8750 |
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DC Identifier: | https://oa.upm.es/8750/ |
OAI Identifier: | oai:oa.upm.es:8750 |
DOI: | 10.1016/j.cemconres.2009.11.008 |
Official URL: | http://www.sciencedirect.com/science/journal/00088... |
Deposited by: | Memoria Investigacion |
Deposited on: | 30 Sep 2011 08:31 |
Last Modified: | 20 Apr 2016 17:25 |