G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 17/02 (2006.01)
Patent
CA 2042883
SUMMARY OF THE INVENTION METHOD FOR ELECTROCHEMICAL MEASURING THE CORROSION RATE OF REINFORCEMENT IN CONCRETE STRUCTURES, SENSORS AND DEVICE FOR APPLICATION OF THE METHOD. The method obtains the corrosion rate by using a direct current and taking into account the reinforcement area really affected by an electrical signal. The signal is applied to the reinforcement through a ring shaped counterelectrode (4), controlled by a main reference electrode (5) housed therein, the following co- operating with the measurements: a) a series of reference electrodes (7, 8, 9); or b) two concentric counterelectro- des (10, 11), or c) two reference electrodes (13, 14), and one concentric ring shaped counterelectrode (12). A True Polarization Resistance value is obtained from the apparent resistance one corrected with the value of the critical - length or the signal attenuation coefficient, or through extrapolation of the values obtained with growing size electrodes, or by confining the electrical signal within a given space. The described methodology practical realization is pos- sible by means of a corrosion rate meter (6) developed for the envisaged invention. Figures 1 and 2.
Andrade Carmen
Ausin Vicente
Bolano Jose A.
Escudero Lorenza
Feliu Sebastian
Consejo Superior de Investigaciones Cientificas (csic)
Geotecnia Y. Cimientos S.a.-Geocisa
Robic
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