Experiment system for corrosion of stray currents in subway
A technique for stray current and corrosion experiments, applied in weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve problems such as inability to quantitatively express the relationship between polarization potentials
Inactive Publication Date: 2013-01-16
CHINA UNIV OF MINING & TECH
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Abstract
An experiment system for corrosion of stray currents in a subway belongs to a system for simulating corrosion process of stray currents in a subway. An anode and a cathode of an adjustable direct-current power supply of the experiment system are connected with two different auxiliary electrodes respectively, and the auxiliary electrodes are embedded in the upper surface of a reinforced concrete block. Reinforcing steel bars are distributed at different positions inside the reinforced concrete block. The lower surface of the reinforced concrete block closely contacts with soil medium in a soil box, and steel tubes are disposed in the soil box. Reference electrodes are buried close to the reinforcing steel bars and the steel tubes. Measuring points of the reinforcing steel bars, measuring points of the steel tubes and the reference electrodes are connected with a signal conditioner through wires, and a testing signal is transmitted to a data acquisition device. A pressure signal of the adjustable direct-current power supply is transmitted to the data acquisition device through an electricity transmitter in real time. The data acquisition device transmits the two signals to an upper computer through a serial communication port. The experiment system can effectively simulate the corrosion process of stray currents in a subway, and accordingly capability of estimating corrosion state of a metal structure in a subway system is further increased for experiment preparation.
Application Domain
Weather/light/corrosion resistance
Technology Topic
RebarSteel tube +20
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Examples
- Experimental program(1)
- Effect test(1)
Example Embodiment
PUM
Property | Measurement | Unit |
Size | 267.0 | m |
Size | 0.267 ~ 675.0 | m |
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