Max Hartmann, summer semester 2018
The corrosion measurement in concrete is performed to detect electrochemical oxidation processes on the rebar. The gradual process of carbonation lowers the pH of the concrete and the built-in steel can begin to rust. Reinforcement corrosion has a major impact on the life of structures and can cause a variety of consequential damage whose assessment is essential to its load-bearing capacity and usability. There are various methods for the evaluation of such damages, many testing procedures and inspection measures have been developed.
Non-destructive or minimally invasive methods have the advantage of capturing the damaged area and confining it locally without damaging the entire surface of the concrete cover.
Overview procedures:
- Potential field measurement
- Ultrasound-echo method
- Impact-echo method
- RADAR
- Endoscopy
- Radiography
- Inductive and capacitive methods
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