Development of low-pH cementitious materials for HLRW repositories. Resistance against ground waters aggression

Garcia Calvo, Jose Luis and Hidalgo, A. and 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.

Description

Title: Development of low-pH cementitious materials for HLRW repositories. Resistance against ground waters aggression
Author/s:
  • Garcia Calvo, Jose Luis
  • Hidalgo, A.
  • Fernandez Luco, L.
  • Alonso Alonso, Maria Cruz
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

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

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

More information

Item ID: 8750
DC Identifier: http://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/00088846
Deposited by: Memoria Investigacion
Deposited on: 30 Sep 2011 08:31
Last Modified: 20 Apr 2016 17:25
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM