Electrochemical properties of earthen materials such as electrical resistivity, pH, salt concentrations, and organic contents are commonly used to characterize the corrosion potential of buried metal elements that are in direct contact with the surrounding soil.
The TRB National Cooperative Highway Research Program'sNCHRP Research Report 958: Improved Test Methods and Practices for Characterizing Steel Corrosion Potential of Earthen Materials proposes a protocol describing best practices for sampling, testing, and characterizing the steel corrosion potential of earthen materials.
The protocol incorporates alternatives to the current AASHTO test standards for measuring electrochemical properties.
Table of Contents
|Chapter 1. Background||15-23|
|Chapter 2. Research Approach||24-25|
|Chapter 3. Laboratory Measurements (Phase II)||26-58|
|Chapter 4. Field Measurements (Phase III)||59-75|
|Chapter 5. Conclusions and Needs for Future Research||76-79|
|Appendix A. Test Protocols Recommended Electrochemical Test Methods to Evaluate the Corrosion Potential of Earthen Materials||83-90|
|Appendix B. Details of Laboratory Measurements||91-102|
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