Distribution of Chloride, Ph, Resistivity, and Sulfate Levels in Backfill for Mechanically-Stabilized Earth Walls and Implications for Corrosion Testing : [Summary]

Details

• Creators:
  Gunaratne, Manjriker
• Corporate Creators:
  University of South Florida
• Subject/TRT Terms:
  • Earth walls
  • Backfill soils
  • Corrosion
  • pH value
  • Electrical resistivity
  • Chlorides
  • Sulfates
  • Recommendations
• Publication/ Report Number:
  BDV25-977-03
• Resource Type:
  Brief
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• Abstract:
  Road construction projects often require mechanically stabilized earth (MSE), earthwork construction in which soil is retained by walls and reinforced with wire mesh, metal strips, and structural geosynthetics (geotextile or geogrid). The fill soil for these projects, as it leaves the source, must meet Florida Department of Transportation (FDOT) standards: it must be nonplastic, have a low liquid limit, low organic matter, and low fine particle content. Fill soil must also be noncorrosive, and it is tested for corrosive properties — pH, minimum resistivity, chloride, and sulfate levels — both at the source and after it is placed and compacted, as a quality assurance measure. However, variability in current sampling and analysis methods can result in delays in accepting or rejecting backfill at a specific work site or in inadvertently accepting corrosive soil, with future, costly maintenance issues
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28916/dot_28916_DS1.pdf
• File Type:
  [PDF - 934.74 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:5eb49d0fe224cf05b38775187f0eac2f4e68deedc00162db4bcbf3df880e539d