Evaluating Corrosivity of Geomaterials in MSE Walls: Determination of Resistivity From Pore Water Chemistry

Details

• Creators:
  Walker, W Shane ; Ghadimi, Shahrouz J. ; Arciniega, Jose Luis ; Nazarian, Soheil
• Corporate Creators:
  University of Texas at El Paso. Department of Civil Engineering
• Corporate Contributors:
  Rutgers University. Center for Advanced Infrastructure and Transportation
• Subject/TRT Terms:
  • Corrosion
  • Corrosive materials
  • Fills
  • Leachate
  • Mechanically stabilized earth
  • Pore water
  • Resistance (Electricity)
  • Soils
  • Resistivity
  • Leach test
  More +
• Publication/ Report Number:
  CAIT-UTC-NC38
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report, June 1, 2016 – January 15, 2019
• Corporate Publisher:
  University of Texas at El Paso. Department of Civil Engineering
• Abstract:
  It is critically important to predict the corrosivity of fill materials in mechanically-stabilized earth (MSE) walls which can cause corrosion of steel reinforcement and lead to structural failure. A common way of assessing the corrosivity of fill materials is to analyze readily soluble constituents such as chloride and sulfate. In this study, fill materials with a wide range of geological type and gradation were collected throughout the US and Canada and analyzed with several methods to extract soil leachate. An empirical model was developed to estimate the resistivity of soil leachates as a function of chloride, sulfate, and alkalinity concentrations, and this calculation can be used to corroborate laboratory testing results.
• Format:
  PDF
• Funding:
  DTRT13-G-UTC28
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/49168/dot_49168_DS1.pdf
• File Type:
  [PDF - 707.12 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:c5e200a9fd114042e24aa03d3e1192a77f73c5c752d6646d7fb4b15c41f7d8a1