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Analysis of the erodibility of geomaterials is important for the study of problems related to soil erosion such as bridge scour, embankment overtopping erosion, and stream stability. Erodibility is the relationship between the soil erosion rate and fluid velocity or hydraulic shear stress. Since different soils have different geotechnical properties, their erosion rates vary.

The TRB National Cooperative Highway Research Program's NCHRP Research Report 915: Relationship Between Erodibility and Properties of Soils provides reliable and simple equations quantifying the erodibility of soils on the basis of soil properties.

The report presents a detailed analysis of the issue. In addition, the project that developed the report also produced a searchable spreadsheet that uses statistical techniques to relate geotechnical properties to soil erodibility. The spreadsheet, NCHRP Erosion, includes a searchable database that includes compiled erosion data from the literature review and a plethora of erosion tests. It contains equations that may be used to estimate the erosion resistance of soil and determine whether erosion tests are needed.

The following appendices to NCHRP Report 915 were published online in a single Appendices Report:

Appendix 1 – Erosion Test Results Spreadsheets

Appendix 2 – Geotechnical Properties Spreadsheets

Appendix 3 – First and Second Order Statistical Analysis Results

Appendix 4 – Deterministic Frequentist Regression Analysis

Appendix 5 – Probabilistic Calibration Results

RESOURCES AT A GLANCE

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2019. Relationship Between Erodibility and Properties of Soils. Washington, DC: The National Academies Press. https://doi.org/10.17226/25470.

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Publication Info

328 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/25470
Chapters skim
Front Matter i-viii
Summary 1-10
Chapter 1 - Introduction 11-19
Chapter 2 - Existing Erosion Tests 20-55
Chapter 3 - Existing Correlations Between Soil Erodibility and Soil Properties 56-75
Chapter 4 - Erosion Experiments 76-116
Chapter 5 - Organization and Interpretation of the Data 117-137
Chapter 6 - Comparison of Selected Soil Erosion Tests by Numerical Simulation 138-167
Chapter 7 - Development of Correlation Equations 168-279
Chapter 8 - Most Robust Correlation Equations 280-300
Chapter 9 - Conclusions and Recommendations 301-317
Symbols and Abbreviations 318-319
References 320-324
Bibliography 325-326
Appendices 327-330

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Links

  • NCHRP Erosion
    Includes a searchable database that includes compiled erosion data from the literature review and a plethora of erosion tests. Also contains equations to help estimate the erosion resistance of soil and determine whether erosion tests are needed.
  • Appendices Report
    Appendix 1 – Erosion Test Results Spreadsheets; Appendix 2 – Geotechnical Properties Spreadsheets; Appendix 3 – First and Second Order Statically Analysis Results; Appendix 4 – Deterministic Frequentists’ Regression Analysis; and Appendix 5 – Probabilistic
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