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Investigating the thermo-mechanical behaviour of cementitious materials using image processing techniques / V. Huon in Cement and concrete research, Vol. 39 N° 6 (Juin 2009) 

Public ISBD [article]  in Cement and concrete research > Vol. 39 N° 6 (Juin 2009) . - pp. 529–536 Titre : Investigating the thermo-mechanical behaviour of cementitious materials using image processing techniques Type de document : texte imprimé Auteurs : V. Huon, Auteur Année de publication : 2009 Article en page(s) : pp. 529–536 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Infrared  thermography;  Image  analysis;  Mechanical  properties;  Concrete;  High-performance  concrete Résumé : Infrared thermography and Digital Image Correlation were used to analyse the mechanical behaviour of mortar, concrete, and high-performance concrete specimens under quasi-static loads. For specimens under compressive loads, Infrared thermography clearly showed the thermo-elastic coupling as well as thermal dissipations due to the microcracking state of freeze/thaw damaged concrete specimens. During an up to failure compressive test, localized thermal effects were observed at the macro-crack location before it appeared. Strain fields at the surface of steel-fibre high-performance concrete specimens under tensile and flexural loadings were determined using the Digital Image Correlation (DIC) technique. These experiments showed that the strain fields early became inhomogeneous. Strains concentrated in multiple localization zones which highlighted the role of the steel fibres in transmitting the internal forces. REFERENCE : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609000520 [article] Investigating the thermo-mechanical behaviour of cementitious materials using image processing techniques [texte imprimé] / V. Huon, Auteur . - 2009 . - pp. 529–536. Génie Civil Langues : Anglais (eng) in Cement and concrete research > Vol. 39 N° 6 (Juin 2009) . - pp. 529–536 Mots-clés : Infrared  thermography;  Image  analysis;  Mechanical  properties;  Concrete;  High-performance  concrete Résumé : Infrared thermography and Digital Image Correlation were used to analyse the mechanical behaviour of mortar, concrete, and high-performance concrete specimens under quasi-static loads. For specimens under compressive loads, Infrared thermography clearly showed the thermo-elastic coupling as well as thermal dissipations due to the microcracking state of freeze/thaw damaged concrete specimens. During an up to failure compressive test, localized thermal effects were observed at the macro-crack location before it appeared. Strain fields at the surface of steel-fibre high-performance concrete specimens under tensile and flexural loadings were determined using the Digital Image Correlation (DIC) technique. These experiments showed that the strain fields early became inhomogeneous. Strains concentrated in multiple localization zones which highlighted the role of the steel fibres in transmitting the internal forces. REFERENCE : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609000520