Electrochemical Test Methods to Evaluate the Corrosion Potential of Earthen Materials (2021) / Chapter Skim
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1 NCHRP Project 21-11 aimed to assess and improve the current methods for characterizing the steel corrosion potential of earthen materials. The main goal of this research was to develop a test protocol to promote characterization of corrosion potential for earthen materials consistent with in-service conditions and observations of field performance.
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2 Electrochemical Test Methods to Evaluate the Corrosion Potential of Earthen Materials Approach The study was performed in three phases. Phase I (literature review)
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Summary 3 and sulfate ion content as well as other anions that are more applicable to drinking water and wastewater. This technique can be applied to samples prepared in accordance with AASHTO T 290 and AASHTO T 291.
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4 Electrochemical Test Methods to Evaluate the Corrosion Potential of Earthen Materials increased, the mean bias and the CV increased. When the materials characterized as fine sand and the results from the soil box tests were considered, the average mean bias was close to 1.00, with a relatively low CV (average CV = 8%)
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Summary 5 The report concludes that results from Tex-129-M apply well to materials with less than approximately 22% of particles passing the No. 10 sieve.
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6 Electrochemical Test Methods to Evaluate the Corrosion Potential of Earthen Materials Organization of the Report Chapter 1 summarizes the advantages and shortcomings associated with the current test methods and practices for assessing the corrosivity of earthen materials (Phase I)
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