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Application of nanoindentation testing to study of the interfacial transition zone in steel fiber reinforced mortar

Wang, Xiao Hui; Jacobsen, Stefan; He, Jianying; Zhang, Zhiliang; Lee, Siaw Foon; Lein, Hilde Lea
Journal article, Peer reviewed
Published version
Åpne
2009CemConcRes_Application+of+nanoindentation+testing+to+study+of+the+interfacial+transition+zone+in+steel+fiber+reinforced+mortar.pdf (Låst)
Permanent lenke
http://hdl.handle.net/11250/2581611
Utgivelsesdato
2009
Metadata
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  • Institutt for konstruksjonsteknikk [1656]
  • Publikasjoner fra CRIStin - NTNU [21891]
Originalversjon
Cement and Concrete Research. 2009, 39 (8), 701-715.   10.1016/j.cemconres.2009.05.002
Sammendrag
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. © 2009 Published by Elsevier Ltd.
Utgiver
Elsevier
Tidsskrift
Cement and Concrete Research

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