Development of muon scattering tomography for a detection of reinforcement in concrete

Magdalena J Dobrowolska, Jaap J Velthuis, Anna K Kopp, Chiara De Sio, R Milne, Philip Pearson

Research output: Contribution to journalArticle (Academic Journal)peer-review

2 Citations (Scopus)
81 Downloads (Pure)


Inspection of ageing, reinforced concrete structures is a world-wide challenge. Existing non-destructive evaluation techniques in civil and structural engineering have limited penetration depth and don't allow to precisely ascertain the configuration of reinforcement within large concrete objects. The big challenge for critical infrastructure (bridges, dams, dry docks, nuclear bioshields etc.) is understanding the internal condition of the concrete and steel, not just the location of the reinforcement. In most new constructions the location should be known and recorded in the as-built drawings, where these might not exist due to poor record keeping for older structures. Muon scattering tomography is a non-destructive and non-invasive technique which shows great promise for high-depth 3D concrete imaging. Previously, we have demonstrated that individual bars with a diameter of 33.7 ± 7.3 mm can be located using muon scattering tomography. Here we present an improved method that exploits the periodicity of bar structures. With this new method, reinforcement with bars down to 6 mm thickness can be detected and imaged.
Original languageEnglish
Article number035037
Number of pages16
JournalEngineering Research Express
Issue number3
Publication statusPublished - 6 Sept 2021

Bibliographical note

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© 2021 The Author(s).


  • 3D imaging, concrete imaging, reinforcement location, bar location, muon scattering tomography, NDE technique


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