Study of interfacial microstructure, fracture energy, compressive energy and debonding load of steel fiber-reinforced mortar
作者： Siaw Foon Lee , Stefan Jacobsen
DOI: 10.1617/S11527-011-9710-4
关键词: Composite material 、 Microstructure 、 Fracture mechanics 、 Scanning electron microscope 、 Fiber 、 Materials science 、 Porosity 、 Silica fume 、 Mortar 、 Cement
摘要: The properties of the interfacial transition zone (ITZ) steel fiber and bulk matrix were quantified using backscattered electron imaging analysis (BSE-IA) scanning microscopy with energy dispersive X-ray (SEM-EDX), their relationship mechanical fiber-reinforced mortars was studied. water binder ratio (w/b) mortar, amount silica fume varied. From quantitative analysis, a higher build-up calcium hydroxide found from fiber’s interface up to 2 or 4 μm distance away its reduced 10% cement replacement by fume. Porosity in ITZ decreased fracture energy, compressive debonding load mortar. However, effect became marginal if substantial C–S–H fibers appeared matrix, which increased studied properties.
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