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Condition assessment of concrete by hybrid non-destructive tests


This paper presents interim findings of a research project that was aimed to develop reliable methods to assess the condition of bridges and port-structures. The use of different types of non-destructive testing (NDT) equipment in assessing in situ concrete such as that for concrete cover measurement and locating the arrangement of the reinforcements, air permeability, electrical resistivity and the half-cell potential is reported in this paper. Six electrically inter-connected reinforced concrete (RC) specimens were made under laboratory conditions to validate NDT equipment output and to correlate them. Field testing was then conducted on the exterior of an RC wall of Doug McDonell Building at the University of Melbourne, Parkville campus. The results show that the use of multiple NDT equipment can enhance the understanding of the in situ condition by minimising the limitation inherent in each of the equipment. Combination of output from different testing methods allows a more precise condition assessment of the RC structure. In addition, measurements can be used to estimate the service life of the RC element.

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The authors would like to thank Australia Indonesia Centre (AIC) for the financial support towards Strategic Research Project 2. The contribution from the Australian Research Council’s Discovery Early Career Researcher Grant (DE170100165, DE 2017 R1) is acknowledged. The equipment was purchased through an ARC LIEF Grant (LE140100053). The authors would like to thank the postgraduates Boyuan Zhang, Changda Zhang, Fanxi Meng, and Jialiang Duan for their contribution with Laboratory tests.

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Correspondence to Massoud Sofi.

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Sofi, M., Oktavianus, Y., Lumantarna, E. et al. Condition assessment of concrete by hybrid non-destructive tests. J Civil Struct Health Monit 9, 339–351 (2019).

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  • Non-destructive testing
  • Corrosion
  • Condition assessment
  • Service life
  • Reinforced concrete