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Monitoring of concrete structures by using the 14 MeV tagged neutron beams (CROSBI ID 200446)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Sudac, Davorin ; Nađ, Karlo ; Obhođaš, Jasmina ; Valković, Vladivoj Monitoring of concrete structures by using the 14 MeV tagged neutron beams // Radiation measurements, 59 (2013), 193-200. doi: 10.1016/j.radmeas.2013.06.001

Podaci o odgovornosti

Sudac, Davorin ; Nađ, Karlo ; Obhođaš, Jasmina ; Valković, Vladivoj

engleski

Monitoring of concrete structures by using the 14 MeV tagged neutron beams

The maintenance and repair of reinforced concrete structures, especially those submerged in the sea-water require effective inspection and monitoring techniques for assessing the state of corrosion in the reinforcement material. An underwater inspection system was developed which is able to monitor the corrosion of the reinforcement. The system is composed of a remotely operating vehicle (ROV) equipped with the sealed tube neutron generator (NG). By rotating the NG and by using the associated alpha particle technique it is possible to measure the concrete cover thickness together with the reinforcing bar diameter. The possibility of estimating the carbon and chloride contents in the concrete was investigated. Iron plates of different thickness, covered by 6 cm thick concrete block, were successfully detected and the thickness of the concrete cover was estimated. In addition, reinforcing bar of one and 3 cm in diameter were identified and measured. All measurements could be performed without cleaning the concrete surface from fouling material.

fast neutrons; corrosion monitoring; concrete; underwater structure

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Podaci o izdanju

59

2013.

193-200

objavljeno

1350-4487

10.1016/j.radmeas.2013.06.001

Povezanost rada

Fizika

Poveznice
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