PREVENTING POSITIVE PORE WATER PRESSURES WITH A GEOCOMPOSITE CAPILLARY BARRIER DRAIN

The Geocomposite Capillary Barrier Drain (GCBD) has been developed and tested to prevent positive pore pressures from developing by laterally draining water while it is still in tension. The GCBD consists of two key layers that function as long as the water pressures in the system remain negative: (1) a transport layer that laterally drains water and (2) a capillary barrier layer that prevents water from moving downward. prototype GCBD systems have been tested in a 3 m long lateral drainage test apparatus. For most test conditions, the GCBD systems drained water under negative pressures at a rate sufficient to prevent any positive water pressures from developing in the overlying soil. Further, the drain system served as a barrier as it prevented downward flowing water from moving into the underlying soil.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0803128606
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Stormont, J C
  • Stockton, T B
• Conference:
  • Testing and Performance of Geosynthetics in Subsurface Drainage
  • Location: Seattle, Washington
  • Date: 1999-6-29 to 1999-6-29
• Publication Date: 2000-3

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 15-31

Subject/Index Terms

• TRT Terms: Capillary water; Drainage; Flow; Geosynthetics; Laterals (Irrigation); Pavement design; Pore water pressures; Rutting; Unsaturated soils
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology; Pavements; I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 00801021
• Record Type: Publication
• ISBN: 0803128606
• Report/Paper Numbers: STP 1390
• Files: TRIS
• Created Date: Oct 16 2000 12:00AM