PRELIMINARY EVALUATION OF THE INFLUENCE OF SURFACTANT INJECTION ON THE MECHANICAL BEHAVIOUR OF A COMPACTED TILL

One-dimensional consolidation tests were performed with till samples compacted dry of optimum to 85% of the modified Proctor density. When the applied pressure reached 200 kPa, the samples were saturated (submerged) and then flushed with two types of surfactant solutions, under a hydraulic gradient varying from 35 to 40. Significant compression occurred during submergence and as a result of flushing with a 2% solution of an anionic surfactant. Only minor additional compression resulted from flushing with a 2% solution of a nonionic surfactant. While only preliminary conclusions could be drawn from the limited test results, this study highlighted the importance of considering, in the early stages of remediation procedure design (including the selection of the surfactant), the possible deleterious effects of surfactant injection on the mechanical properties of the soil mass, particularly when it is in a loose to moderately loose state. (A)

  • Corporate Authors:

    National Research Council of Canada

    1200 Montreal Road
    Ottawa, Ontario  Canada  K1A 0R6
  • Authors:
    • Cabral, A R
    • Lefebvre, G
    • Collette, P
  • Publication Date: 1995-6

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00726368
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD
  • Created Date: Oct 28 1996 12:00AM