POSPORI · Polymer Optical Sensors for Prolonged Overseeing the Robustness of civil Infrastructures

Polymer Optical Sensors for Prolonged Overseeing the Robustness of civil Infrastructures

Civil infrastructure construction and maintenance are vital European investments. With the growth of new construction sites and the need to maintain existing structures, focus on assessing load-bearing capabilities and extending lifespans has increased. Monitoring civil infrastructures' health through sensors provides real-time information on abnormalities or damages, enhancing safety. Optical fibre sensors, particularly polymeric ones, offer promising characteristics like immunity to electromagnetic interference, corrosion resistance, small size, and multi-parameter sensing capabilities. The POSPORI project was focused on the utilisation of novel polymer optical fibre Bragg grating sensors to monitor the critical parameters defining the health of civil infrastructures. The initial objective was the fabrication and characterisation of these sensors, and then facilitating their integration into diverse prototype designs. Subsequently, the development of various reinforced concrete monitoring prototypes was undertaken, and testing was conducted in a designated environment. Emphasis was placed on concrete curing monitoring and rebar-concrete bond-slip detection, leveraging the unique attributes of the polymer optical fibre sensors. The final objective was to develop custom-made geostrips with embedded sensors and test both reinforced concrete and soil monitoring prototypes in an operational environment. The objectives were successfully met, and the potential of these sensors in both controlled and real-world environments was demonstrated. Changes in concrete and soil conditions were effectively detected, highlighting the potential for further advancements and commercial applications. In conclusion, significant advancements in optical fibre sensors were achieved, opening avenues for research and commercial endeavours. The innovations have the potential to revolutionise civil infrastructure monitoring, leading to cost-effective maintenance and enhanced public safety. The results promise a transformative approach to monitoring and maintaining various critical infrastructures.

Data: CORDIS, © European Union