DURABILITY AND FROST RESISTANCE OF LIME AND CEMENT STABILIZED SOILS

The various aspects of freeze-thaw durability are considered and basic concepts of a recently developed durability evaluation system are presented. Adequate strength must be achieved in the cured stabilized material prior to the first winter of service. Both cyclic freeze-thaw and heaving types of deterioration may need to be considered, depending on field conditions. If it is assumed that acceptable quality stabilizing additives (lime and cement) are used and adequate quality control is being achieved in mixture preparation and construction, then mixture design becomes a key process. In many mixture design analyses, it has been found that durability considerations control and establishment of stabilizer content levels and/or limit the utilization of the stabilized material relative to its location (base-subbase-modified subgrade) in the pavement system. Freeze-thaw durability testing and evaluation consists of 4 broad areas. (1) Characterizing the field environment: This would involve development of a model that accurately simulates the temperature regime in a pavement system. An idealized freeze-thaw cycle is proposed (and illustrated) for describing the time-temperature history of a particular point in a pavement. (2) Realistic Simulation of field conditions: A laboratory simulation is outlined which utilizes an automatic programmed freeze-thaw unit which provides independently programmed top and bottom temperature control for a series of cylindrical specimens and a water table provided at the bottom of the specimens if desired. (3) Based on a comprehensive consideration of various evaluation procedures and a large quantity of cylic freeze-thaw data, it was concluded that the compressive strength of a stabilized material after various numbers of freeze-thaw cycles is the best procedure for evaluating freeze-thaw durability. (4) Establishment of durability criteria: A discussion of the development of durability criteria based on the residual strength concept gives consideration to the key factors of minimum tolerable strength cured strength, residual strength and strength time profile.

  • Supplemental Notes:
    • This paper was presented during the Symposium on Frost Action on Roads held in Oslo, Norway, 1-3 October, 1973.
  • Corporate Authors:

    Organisation for Economic Co-operation and Development (OECD)

    2, rue André Pascal
    Paris,   France  75775 Paris Cedex 16
  • Authors:
    • Thompson, M R
  • Conference:
  • Publication Date: 1973

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 377-393
  • Serial:
    • Volume: 2

Subject/Index Terms

Filing Info

  • Accession Number: 00260457
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Oct 11 1975 12:00AM