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On the toughness characterization of fibre- Reinforced concrete using notched beam tests
Date Issued
01-01-2019
Author(s)
Jose, Sujatha
Indian Institute of Technology, Madras
Abstract
The significant benefit of using fibre-reinforced concrete (FRC) is its improved energy absorption capacity, termed as toughness, and the consequent enhanced post-cracking load carrying capacity, which have resulted in applications such as tunnel linings, pavements, industrial floors, etc. There is limited knowledge regarding notched beam testing in India for flexural toughness characterization of FRC though it is prevalent in Europe. In the current work, the flexural behaviour of concrete with different dosages of hooked-ended steel fibres are characterized by centre-point loaded (CPL) notched beam testing, according to the EN 14651:2005 and RILEM TC 162-TDF recommendations. The flexural toughness parameters assessed are based on the load-crack mouth opening displacement (CMOD) curves and load–deflection (δ) curves obtained experimentally. A detailed analysis also revealed that for steel FRC, a good correlation exists between equivalent and residual flexural tensile strength parameters.
Volume
11