The provision of a new expressway at Launcestion requires the construction of embankments across alluvial mud flats. This paper describes the construction and performance, to date, of three instrumented test embankments having: (a) no sub-soil drainage, (b) vertical sand drains, and (c) vertical cardboard wick drains. Installation techniques for the sub-soil drains are described and a comparison is made of the settlement and pore pressure dissipation for the three embankments. The paper concludes by showing that the effectiveness of cardboard wick and sand drains is comparable and that considerable savings can be made in time and money by the adoption of cardboard wicks where sub-soil drainage is found necessary for accelerated consolidation.

Media Info

  • Features: References; Tables;
  • Pagination: p. 88-108
  • Serial:
    • Volume: 6
    • Issue Number: Pt4

Subject/Index Terms

Filing Info

  • Accession Number: 00263174
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Nov 12 1974 12:00AM