Pavement damage caused by frost action in areas of severe winter climate can be reduced by using a subbase material that provides both insulation and improved strength. Expanded polystyrene concrete, a form of lightweight concrete, has this potential. The properties of expanded polystyrene concrete were investigated. Test data indicated that the strength properties of expanded polystyrene concrete are comparable to those of good quality subbase materials. Also, its insulating properties are superior to those of conventional subbase materials. Measurements on pavements sections in an outdoor test installation indicated that expanded polystyrene concrete is effective in reducing or even eliminating subgrade frost penetration under rigid and flexible pavements. Also, expanded-polystyrene-concrete subbases reduce pavement deflections. The results of an analysis investigation indicated that a 1-in. (25-mm) expanded-polystyrene-concrete subbase is as effective as a 3-in. (76-mm) ganular subbase in reducing subgrade freezing under pavements. Also, expanded-polystyrene-concrete subbases reduce pavement and subgrade stresses, thereby increasing pavement load-carrying capacity. /Author/

  • Corporate Authors:

    Portland Cement Association

    5420 Old Orchard Road
    Skokie, IL  United States  60077
  • Authors:
    • Hanna, A N
  • Publication Date: 1978

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00183151
  • Record Type: Publication
  • Report/Paper Numbers: RD055.01P
  • Files: TRIS
  • Created Date: Dec 3 1978 12:00AM