A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of muon scattering tomography for detection of reinforcement in concrete
Inspection of ageing, reinforced concrete structures is a world-wide challenge. Existing evaluation techniques in civil and structural engineering have limited penetration depth and do not 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. Muon scattering tomography is a non-destructive and non-invasive technique which shows great promise for high-depth 3D concrete imaging. Here a method is presented to locate reinforcement meshes placed in a large-scale concrete object. A reinforcement mesh was simulated as two layers of 2 m long bars, forming a mesh. Two layers of the mesh were placed at several distances from each other inside a large concrete block. Previously, we have shown that using our autocorrelation technique for single meshes inside the concrete and using only one week worth of data taking, bars with a diameter of 7 mm and larger, could easily be detected for a 10 cm mesh spacing. The signal for 6 mm diameter bar exceeds the background and becomes very clear after two weeks of data taking. Here we show that we can detect the vertical positions of two mesh layers inside the concrete. This is a very important result for non-destructive evaluation of civil structures.
Development of muon scattering tomography for detection of reinforcement in concrete
Inspection of ageing, reinforced concrete structures is a world-wide challenge. Existing evaluation techniques in civil and structural engineering have limited penetration depth and do not 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. Muon scattering tomography is a non-destructive and non-invasive technique which shows great promise for high-depth 3D concrete imaging. Here a method is presented to locate reinforcement meshes placed in a large-scale concrete object. A reinforcement mesh was simulated as two layers of 2 m long bars, forming a mesh. Two layers of the mesh were placed at several distances from each other inside a large concrete block. Previously, we have shown that using our autocorrelation technique for single meshes inside the concrete and using only one week worth of data taking, bars with a diameter of 7 mm and larger, could easily be detected for a 10 cm mesh spacing. The signal for 6 mm diameter bar exceeds the background and becomes very clear after two weeks of data taking. Here we show that we can detect the vertical positions of two mesh layers inside the concrete. This is a very important result for non-destructive evaluation of civil structures.
Development of muon scattering tomography for detection of reinforcement in concrete
Dobrowolska, Magdalena J (author) / Velthuis, Jaap J (author) / De Sio, Chiara (author) / Kopp, Anna K (author) / Milne, Ruaridh (author) / Pearson, Philip (author)
2022-09-13
Dobrowolska , M J , Velthuis , J J , De Sio , C , Kopp , A K , Milne , R & Pearson , P 2022 , ' Development of muon scattering tomography for detection of reinforcement in concrete ' , Journal of Instrumentation , vol. 17 , no. 9 , C09011 . https://doi.org/10.1088/1748-0221/17/09/C09011
Article (Journal)
Electronic Resource
English
Development of muon scattering tomography for a detection of reinforcement in concrete
| BASE | 2021
Towards an application of muon scattering tomography as a technique for detecting rebars in concrete
| BASE | 2020
Muon tomography applied to assessment of concrete structures: First experiments and simulations.
| BASE | 2022
Muon Tomography of the Interior of a Reinforced Concrete Block: First Experimental Proof of Concept
| BASE | 2021
Ultrasonic tomography for imaging reinforcement steel in concrete bridge girders
| Tema Archive | 2000