METHOD OF USING GROUND PENETRATING RADAR TO DETECT CORROSION OF STEEL BARS IN FERROCONCRETE COMPONENTS
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United States of America Patent
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Issued Date -
Nov 8, 2012
app pub date -
Jul 13, 2011
filing date -
May 5, 2011
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Abandoned
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Abstract
The present invention discloses a method of using ground penetrating radar to detect corrosion of steel bars in ferroconcrete components. The method comprises the following steps. Firstly, a ground penetrating radar is used to emit an electromagnetic wave toward a ferroconcrete component. Then, a reflected electromagnetic wave is received. The reflected electromagnetic wave is calculated to obtain characteristic parameters from the interface of the steel bar and the concrete, wherein the characteristic parameters includes reflection electric potential, specific resistance and corresponding specific electric current from the interface. Reference characteristic data which include reference thicknesses of the concrete versus reference reflected electric potential, specific resistance and corresponding specific electric current from the interface are provided. The obtained interface characteristic parameters and the thickness of the concrete are compared with the reference characteristic data to derive the corrosion condition of steel bars in the ferroconcrete component.
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