Reactividad álcali-sílice y álcali-silicato en pizarras

  1. Campos de la Fuente, Pablo Luis 1
  2. Gadea Sainz, Jesús 1
  3. Soriano Carrillo, Jesús 2
  4. Martín, A. 1
  5. Calderón Carpintero, Verónica 1
  1. 1 Departamento de Construcciones Arquitectónicas e Ingeniería de la Construcción y del Terreno, Escuela Politécnica Superior, Universidad de Burgos. Burgos
  2. 2 2Laboratorio Central de Estructuras y Materiales (CEDEX), Madrid.Estudios Geológicos, 66(1)enero-junio 2010, 91-98ISSN: 0367-0449doi:10.3989/egeol.40143.094JY0-10 Campos 9/6/10 14:14 Página 91
Zeitschrift:
Estudios geológicos

ISSN: 0367-0449

Datum der Publikation: 2010

Ausgabe: 66

Nummer: 1

Seiten: 91-98

Art: Artikel

DOI: 10.3989/EGEOL.40143.094 DIALNET GOOGLE SCHOLAR lock_openOpen Access editor

Andere Publikationen in: Estudios geológicos

Zusammenfassung

This paper presents a study of the reactivity of the slates with alkali hydroxides released by the cements in concretes and mortars. For this purpose several essays were performed under different conditions to a selection of slates of different origins and composition. It has been shown that all the tested slates are susceptible to alkali-silica and alkali-silicate reactivity with the alkalis of the cement and that not all the tests routinely performed to detect such reactions are reliable. Verified the reactivity of these rocks, the causes of observed behaviours and the possibilities to minimize or eliminate this reactivity are studied so that the slates could be in use in contact with cement in composite materials. The use of pozzolanic cements turns out to be effective for the elimination of this type of reactions.

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