Jetting and flooding of granular backfill materials : [summary].

Details

• Creators:
  Fratta, Dante
• Corporate Creators:
  University of Wisconsin--Madison
• Subject/TRT Terms:
  • Backfill soils
  • Floods
  • Hydraulic jetting
  • Evaluation
  • Compaction
  • Laboratory tests
  • Field tests
  • Slurry
  • Drainage
• Publication/ Report Number:
  No. 0092-11-03
• Resource Type:
  Brief
• Geographical Coverage:
  Wisconsin
• Corporate Publisher:
  Wisconsin. Dept. of Transportation
• Abstract:
  Granular backfill materials on highway projects are often compacted by mechanical methods. ; This requires the contractor to place backfill material into loose lifts of varying thickness ; and use compaction equipment to reduce air voids and increase material density until the ; required compaction is achieved. Under the appropriate conditions, alternative methods to traditional ; compaction are hydraulic jetting or flooding. Jetting inserts a probe into the backfill layer and emits ; a high pressure jet of water, saturating the material from the bottom-up. Flooding, or compaction ; by drainage, completely saturates an area and material from the top of the fill downward. Slurry ; flooding involves a mixer “pouring” a slurry mix of granular backfill material and water as the fill ; layer and allowing it to drain. All three hydraulic methods use residual suction upon drainage to ; increase the effective stress and move grains into a more compact arrangement.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28931/dot_28931_DS1.pdf
• File Type:
  [PDF - 551.03 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ed49016c8c3a31b63ebc832e57d887d88f4a47ec32fed15ed1e7184924973543