Fig 3 - uploaded by Iftekhair Ibnul Bashar
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When UHPFRC is exposed to a corrosive environment, steel fibres may undergo corrosion which may affect the interfacial bond and therefore the overall tensile behaviour of UHPFRC. Previous studies have predominately investigated the influence of fibre corrosion on the tensile behaviour of UHPFRC using the flexural test method. In this approach, the...
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Context 1
... unloaded at a rate of 0.1 mm/min and the top grip (moving jaw) of the INSTRON released before measuring the residual crack-width at the same locations. In addition to the measurement of crack-width using a hand-held microscope, four 10 mm LVDTs (located at the four corners of specimens) measured the crack opening over a gauge length of 33.5 mm (Fig. 3). Upon completion of pre-cracking and residual crack-width measurement, the specimens were carefully removed from the UTM and immersed induce ...
Context 2
... and cleaned with fresh tap water to enable clear measurement of crack-width. Before placing the specimens in the UTM, the initial crack-width was remeasured at all nine predefined measurement locations using a microscope. The specimen was reinstalled in the UTM the four LVDTs were reinstalled for measuring crack-width at the four specimen corners (Fig. 3). During testing, the tensile load is again applied to maintain a displacement rate of 0.1 mm/min up to 2.5 mm displacement followed by 0.4 mm/min until the end of ...
