Combined non-destructive method for evaluating the mechanical performance of ultra high performance fibre reinforced concrete (UHPFRC)

Lampropoulos, Andreas, Tsioulou, Ourania and Paschalis, Spyridon (2016) Combined non-destructive method for evaluating the mechanical performance of ultra high performance fibre reinforced concrete (UHPFRC). In: Fib symposium 2016 Performance-based approaches for concrete structures, 21-23 Nov 2016, Cape Town, South Africa.

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Abstract

Non Destructive Testing (NDT) of concrete is extensively used for the in-situ assessment of the mechanical characteristics of concrete. The main advantage of NDT techniques is that they are simple and quick, while the mechanical characteristics of concrete can be evaluated without causing any damage in the existing structures. However, the characteristics of various concrete types are highly affected each time by their mix composition. Hence, the reliability of NDT techniques is questionable and appropriate validation and calibration is required. In the current study, two different mixes have been examined, one representing Ultra High Performance Concrete (UHPC) without steel fibres, and another one with 3% steel fibres representing Ultra High Performance Fibre Reinforced Concrete (UHPFRC). Compressive tests have been conducted alongside with Ultrasonic Pulse Velocity (UPV) and Rebound Hammer (RH) measurements. The experimental results have been used for the development of a model for the evaluation of the mechanical characteristics of UHPFRC using the combined UPV and RH method (SonReb). The results of the current study highlight the efficiency and the reliability of SonReb method for the estimation of the compressive strength of UHPC and UHPFRC using RH and UPV results.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: UHPFRC, NDT, Rebound Hammer, Ultrasonic, SonReb
Subjects: Construction and engineering
Related URLs:
Depositing User: Spyridon Paschalis
Date Deposited: 06 Aug 2021 09:51
Last Modified: 15 Sep 2021 15:30
URI: http://repository.uwl.ac.uk/id/eprint/8158

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