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Corrosion Rate Measurement

Corrosion Rate Measurement. Resistivity Test developed for insitu testing empirical criteria developed relating resistivity to corrosion rate extensive field data available Polarization Resistance Relatively new test Relationship to corrosion poor. Liner Polarisation. 10.

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Corrosion Rate Measurement

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  1. Corrosion Rate Measurement • Resistivity Test • developed for insitu testing • empirical criteria developed relating resistivity to corrosion rate • extensive field data available • Polarization Resistance • Relatively new test • Relationship to corrosion poor

  2. Liner Polarisation

  3. 10 Corrosion Rate (m/year) 5 0 1/12/98 1/6/99 1/12/99 31/5/00 30/11/00 1/6/01 30/11/01 1/6/02 Contaminated Uncontaminated Contaminated Uncontaminated -100 0 -200 -100 -300 Ecorr (mV Ag/AgCl) Ecorr (mV Cu/CuSO4) -200 -400 -300 -500 1/12/98 1/6/99 1/12/99 31/5/00 30/11/00 1/6/01 30/11/01 1/6/02

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