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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effect of silica fume, steel fiber and ITZ on the strength and fracture behavior of mortar
Author(s): Xiao Hui Wang, Stefan Jacobson, Siaw Foon Lee, Jian Ying, He, Zhi Liang Zhang
Appears on pages(s): 125-139
Keywords: Steel Fiber, Silica fume, Strength and toughness, Nanoindentation, Interfacial transition zone (ITZ)
Abstract:Two sets of parameters known to affect the quality and thickness of the interfacial transition zone (ITZ), i.e. water/binder ratio and content of silica fume were varied in a series of mortars without and with steel fiber. Compressive and three-point bending tests were performed and the dissipated energies were calculated. Nanoindentation characteristics of the steel fiber–matrix and fiber–matrix-aggregate interfacial zones in the steel fiber reinforced mortars were studied. Influence of water/binder ratio, steel fiber, silica fume and ITZ on the strength and toughness of the mortar was analyzed, respectively. It is found that mortar compressive strength can be increased with low volume addition of steel fiber if the air content is well controlled; the interfacial characteristic and microstructural morphology near the fiber surface play a critical role on the three-point bending strength and the toughness of the steel fiber reinforced mortar.
International union of laboratories and experts in construction materials, systems and structures, International Partner Access.
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