Naslov
Monitoring korozije u betonskim konstrukcijama senzorima s optičkim vlaknima
(Corrosion Monitoring in Concrete Structures with Fibre Optical Sensors)

Autori
Sekulić, Dalibor ; Veža, Damir ; Bjegović, Dubravka ; Mikulić, Dunja

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 10th International Conference Structural faults + Repair, London, UK, July 01-03, 2003. / Forde, Michael - London : Delhi : Engineering Technics Press, 2003

Skup
Structural Faults + Repair - 2003, 10th International Conference and Exhibition

Mjesto i datum
London, Ujedinjeno Kraljevstvo, 01.07.2003. - 03.07.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
senzori s optičkim vlaknima; betonske konstrukcije; monitoring; korozija armature
(fibre optical sensors; concrete structures; monitoring; reinforcement corrosion)

Sažetak
Corrosion of steel reinforcement in concrete is major factor, provoking deterioration of concrete structures, reducing their service life. Maintenance of reinforced concrete structures and planning of the work on their remediation requires effective monitoring techniques. These techniques should be accurate, cost effective, immune to aggressive substances, and should provide long term measurement stability. Corrosion of steel can be measured directly, or indirectly by measuring parameters correlated with corrosion such as moisture, pH value, Cl- ion content, and cracks in concrete due to the corrosion process. Many monitoring techniques have bee developed for these purposes, of which most are the electrochemical ones. Chemical fibre optical sensors (FOSs) are an interesting approach for making measurements of parameters correlated with corrosion. The FOSs are advantageous compared with conventional measuring methods. They posses long-term stability, immunity to electromagnetic fields, and ability to make distributed measurements. The FOSs are in use for chemical analyses of solutions or gases, and application for making measurements in concrete structures needs further research and development. The FOSs can be extrinsic or intrinsic. The extrinsic sensors use an optical fibre for the transmission of light from the sensing element and back to the detector. The intrinsic sensors make use of the properties of fibre to measure a given parameter. Important measurement principles used in FOSs are based on evanescent wave absorption phenomenon and micro bending.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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