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

Details

• Creators:
  Fratta, Dante
• Corporate Creators:
  University of Wisconsin--Madison
• Subject/TRT Terms:
  Backfill Soils Compaction Drainage Evaluation Field Tests Floods Hydraulic Jetting Laboratory Tests Slurry
• 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
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ed49016c8c3a31b63ebc832e57d887d88f4a47ec32fed15ed1e7184924973543
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28931/dot_28931_DS1.pdf
• File Type:
  [PDF - 551.03 KB ]