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Microstructure of concrete subjected to elevated temperatures: physico-chemical changes and analysis techniques

Auteur(s):



Médium: article de revue
Langue(s): anglais
Publié dans: Revista IBRACON de Estruturas e Materiais, , n. 4, v. 10
Page(s): 838-863
DOI: 10.1590/s1983-41952017000400004
Abstrait:

The exposure of concrete to high temperatures, such as in a fire, leads to physical and chemical changes, which may cause deterioration of mechanical properties, cracking and spalling. This paper presents a critical review of microstructural changes in concrete exposed to high temperature. The transformations developed in the cement paste, aggregates and interfacial transition zone were studied, as well as the experimental techniques of microanalysis presented in recent related researches. Lastly, a critical analysis of experimental results from literature was performed. It was verified that microstructural changes are related to concrete properties and the heating process. The experimental techniques has a potential use for assessment of thermally damaged concrete, however, these techniques must be applied simultaneously and specific methods must be established.

Structurae ne peut pas vous offrir cette publication en texte intégral pour l'instant. Le texte intégral est accessible chez l'éditeur. DOI: 10.1590/s1983-41952017000400004.
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  • Reference-ID
    10413330
  • Publié(e) le:
    12.02.2020
  • Modifié(e) le:
    12.02.2020
 
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