Effect of the curing conditions of concrete on the behaviour under freeze-thaw cycles

Al‐Assadi, Ghaida; Casati Calzada, María Jesús; Fernandez Gomez, Jaime Antonio y Gálvez Ruíz, Jaime (2011). Effect of the curing conditions of concrete on the behaviour under freeze-thaw cycles. En: "Conferencia Ibérica de Fractura e Integridade Estrutural 2010", 17/03/2010 - 19/03/2010, Oporto, Portugal. ISBN ISSN 8756-758X.

Descripción

Título: Effect of the curing conditions of concrete on the behaviour under freeze-thaw cycles
Autor/es:
  • Al‐Assadi, Ghaida
  • Casati Calzada, María Jesús
  • Fernandez Gomez, Jaime Antonio
  • Gálvez Ruíz, Jaime
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Conferencia Ibérica de Fractura e Integridade Estrutural 2010
Fechas del Evento: 17/03/2010 - 19/03/2010
Lugar del Evento: Oporto, Portugal
Título del Libro: Proceedings of Conferência Ibérica de Fractura e Integridade Estrutural 2010. Fatigue and Fracture of Engineering Materials and Structures
Fecha: Julio 2011
ISBN: ISSN 8756-758X
Volumen: 34, is
Materias:
Palabras Clave Informales: concrete;freeze–thaw cycles;cement hydration;porosity;curing of concrete
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ingeniería Civil: Construcción
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (1MB) | Vista Previa

Resumen

The aim of this work is to relate the curing conditions of concrete and the addition of an air-entraining admixture with the damage caused by freeze–thaw cycles. In countries with a continental climate, the curing of concrete in summer is performed under climatic conditions of high temperature and low humidity, and during the winter the concrete suffers conditions of freeze–thaw, often accompanied by the use of de-icing salts. This paper shows the experimental results of the behaviour of concrete specimens cured under climatic summer conditions (high temperature and low humidity) and then subjected to freeze–thaw cycles. Curing of the specimens includes conditions of good and bad practice in relation to wetting and protection of the concrete. It also examines the effectiveness of using an air-entraining admixture in both cases. The experimental programme includes an evaluation of the mechanical properties of the concrete, the study of the cement hydration and the measurement of the volume and pore sizes of the concrete. These tests were performed before and after the application of the freeze–thaw cycles. The results obtained showed that the specimens without air-entraining admixture show a deterioration of mechanical properties after the freeze–thaw test. However, the inclusion of air bubbles benefits the behaviour of concrete against freeze–thaw cycles so even better mechanical properties after the test were observed. This anomalous behaviour is because the cement hydration process continues over the freeze–thaw tests, closing the pore structure. This aspect has been confirmed with the DTA and TG tests performed

Más información

ID de Registro: 7002
Identificador DC: http://oa.upm.es/7002/
Identificador OAI: oai:oa.upm.es:7002
URL Oficial: http://onlinelibrary.wiley.com/doi/10.1111/j.1460-2695.2010.01520.x/full
Depositado por: Memoria Investigacion
Depositado el: 15 Jul 2011 09:44
Ultima Modificación: 20 Abr 2016 16:06
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM