PRESSURE-INJECTED LIME FOR TREATMENT OF SWELLING SOILS

The pressure-injected lime technique for treating swelling soils is described and evaluated. Basic mechanisms of soil-lime reactions and pressure-injected lime are considered, and the effects of treatments with pressure-injected lime are discussed. Typical field experiences with pressure-injected lime are summarized, and the factors that appear to influence the effectiveness of the technique are identified. There are conflicting reports concerning the effectiveness of pressure-injected lime treatment of expansive soils. The condition most favoring the achievement of successful pressure-injected lime treatment of expansive soils is the presence of an extensive fissure and crack network into which the lime slurry can be successfully injected. The proposed treatment mechanisms (prewetting, development of soil-lime moisture barriers, and effective swell restraint with the formation of limited quantities of soil-lime reaction products) have validity. The relative significance of the prewetting and soil-lime pozzolanic reaction aspects of pressure-injected lime treatment has not been established. The various statements and reports in the literature and the information presented in the paper suggest that pressure-injected lime may not be effective under all circumstances but that in appropriate conditions it can be satisfactorily and economically used. It is indicated that appropriate guidelines and principles should be developed for evaluating (on a site-by-site basis) the potential effectiveness of pressure-injected lime treatment.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 24-34
  • Monograph Title: Swelling soils
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00138137
  • Record Type: Publication
  • ISBN: 0309024811
  • Files: TRIS, TRB
  • Created Date: Sep 4 1976 12:00AM