Highway with composite bars: distributed strain sensing (DSS) and crack detection
The project involves a 100 m long section of a highway in Poland, which was reinforced with only composite bars, including EpsilonRebars from the Nerve-Sensors family. The entire experimental section was concreted without any dilatations,
which is a pioneering approach in road engineering. Our DFOS-based monitoring system provided essential information on strain profiles and crack morphology, while also becoming structural reinforcement.
which is a pioneering approach in road engineering. Our DFOS-based monitoring system provided essential information on strain profiles and crack morphology, while also becoming structural reinforcement.
DFOS Sensors Installed: EpsilonRebar
Project challenges
Benefits of using the DFOS monitoring system
Results of using the DFOS monitoring system
EpsilonRebars were installed in two lines along the entire length of the highway section, as well as at selected critical locations (including transvers direction). Two diameters of the sensors were applied in this project, corresponding to the design assumptions. Sensors had a double function in the structure: sensing and reinforcing at the same time. Measurements performed during long term monitoring allowed for detection of all the cracks formed during hardening of early age concrete – see example in the figure below..
Example results
Recomendations (optional)
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John Doe
Project partner
