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Application of nanoindentation testing to study of the interfacial transition zone in steel fiber reinforced mortar / Xiao Hui Wang in Cement and concrete research, Vol. 39 N° 8 (Août 2009) 

Public ISBD [article]  in Cement and concrete research > Vol. 39 N° 8 (Août 2009) . - pp. 701–715 Titre : Application of nanoindentation testing to study of the interfacial transition zone in steel fiber reinforced mortar Type de document : texte imprimé Auteurs : Xiao Hui Wang, Auteur ; Stefan Jacobsen, Auteur ; Jian Ying He, Auteur Année de publication : 2009 Article en page(s) : pp. 701–715 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Nanoindentation;  Scanning  Electron  Microscopy  (SEM);Interfacial  transition  zone  (ITZ);  Elastic  modulus  and  hardness;  Steel  fiber  reinforced  mortar Résumé : The characteristics of the profiles of elastic modulus and hardness of the steel fiber–matrix and fiber–matrix–aggregate interfacial zones in steel fiber reinforced mortars have been investigated by using nanoindentation and Scanning Electron Microscopy (SEM), where two sets of parameters, i.e. water/binder ratio and content of silica fume were considered. Different interfacial bond conditions in the interfacial transition zones (ITZ) are discussed. For sample without silica fume, efficient interfacial bonds across the steel fiber–matrix and fiber–matrix–aggregate interfaces are shown in low water/binder ratio mortar; while in high water/binder ratio mortar, due to the discontinuous bleeding voids underneath the fiber, the fiber–matrix bond is not very good. On the other hand, for sample with silica fume, the addition of 10% silica fume leads to no distinct presence of weak ITZ in the steel fiber–matrix interface; but the effect of the silica fume on the steel fiber–matrix–aggregate interfacial zone is not obvious due to voids in the vicinity of steel fiber. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001057 [article] Application of nanoindentation testing to study of the interfacial transition zone in steel fiber reinforced mortar [texte imprimé] / Xiao Hui Wang, Auteur ; Stefan Jacobsen, Auteur ; Jian Ying He, Auteur . - 2009 . - pp. 701–715. Génie Civil Langues : Anglais (eng) in Cement and concrete research > Vol. 39 N° 8 (Août 2009) . - pp. 701–715 Mots-clés : Nanoindentation;  Scanning  Electron  Microscopy  (SEM);Interfacial  transition  zone  (ITZ);  Elastic  modulus  and  hardness;  Steel  fiber  reinforced  mortar Résumé : The characteristics of the profiles of elastic modulus and hardness of the steel fiber–matrix and fiber–matrix–aggregate interfacial zones in steel fiber reinforced mortars have been investigated by using nanoindentation and Scanning Electron Microscopy (SEM), where two sets of parameters, i.e. water/binder ratio and content of silica fume were considered. Different interfacial bond conditions in the interfacial transition zones (ITZ) are discussed. For sample without silica fume, efficient interfacial bonds across the steel fiber–matrix and fiber–matrix–aggregate interfaces are shown in low water/binder ratio mortar; while in high water/binder ratio mortar, due to the discontinuous bleeding voids underneath the fiber, the fiber–matrix bond is not very good. On the other hand, for sample with silica fume, the addition of 10% silica fume leads to no distinct presence of weak ITZ in the steel fiber–matrix interface; but the effect of the silica fume on the steel fiber–matrix–aggregate interfacial zone is not obvious due to voids in the vicinity of steel fiber. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884609001057