Steel fiber confined graphite concrete for pavement deicing

The electric heating concrete overlays were cast in place. Transformers converting 220 V AC to 48 V AC were used for the power source. Steel angle structural shapes were embedded in the electric heating concrete for electrodes. Some electric wires were pulled off from the electrodes during the construction. As a result, the power to a few blocks on each ramp was cut. A hand-held magnetic field meter was used to troubleshoot the disconnection locations. Based on measurements of the magnetic field strengths, all the disconnected wires in the hardened concrete were detected and reattached to the electrodes. The drilled holes were patched with carbon cement paste. Subsequent testing showed that good heating performance was successfully restored.