DFOS strain measurements of an active road located within a mining area

EpsilonRebars were integrated (embedded) inside
the asphalt layer of a real road structure running in mining areas, i.e. where very large deformations are expected. A new road’s structural performance was first investigated during shot-term mechanical load tests. They were performed a few times over the year analyse temperature influence. However, the DFOS-based nervous system will also be a useful diagnostic system for long-term monitoring.

DFOS Sensors Installed: EpsilonRebar

Project challenges

How to apply non-invasive diagnostics in demanding historic structures?
How to get precise measurement data to detect local damage and imperfection?
How to measure detailed strain profiles over the entire height of the brick masonry wall?

Benefits of using the DFOS monitoring system

Measurements of internal strains inside the asphalt layer of a new road
Comprehensive deformation control of the structure located in mining areas
Realiable assessment of short- and long-term structural performance
Detailed scientific data for design procedures and FEA calibration

Results of using the DFOS monitoring system

EpsilonRebars were embedded inside the asphalt layer of the road structure in mining areas. Both longitudinal and transverse sections were formed to analyse the complex state of deformations caused by mechanical load (truck). The example results are presented in the below figure from the transverse EpsilonRebar. We have obtained unique measurement data, unobtainable with other measurement techniques and gauges.

Technical specifications

8 400 measurement points
42 m of sensing path
6 x EpsilonRebar
load tests & long-term

Example results

Recomendations (optional)

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John Doe

Project partner

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