CHARACTERISTICS AND PERFORMANCE OF LOW-QUALITY AGGREGATE IN AN EXPERIMENTAL FLEXIBLE PAVEMENT-ABRIDGEMENT

the results of the studies reported in this paper suggest that the presence of deleterious material in either fine or coarse aggregate may be detrimental to pavement performance. Laboratory and field data indicate that, although these materials may perform satisfactorily in the initial stages of pavement life, exposure to saturation and freeze-thaw conditions can result in substantial deterioration in mixture strength and stiffness. It is concluded that such materials should not be used in surface-course mixtures where climatic exposure is greatest. Such materials could be used in base courses if adjustments are made in layer equivalencies to account for lower durability characteristics. The data also suggest that the presence of deleterious materials in coarse aggregate is not solely responsible for the poor performance exhibited by these mixtures. Deleterious fine aggregate may also adversely affect the durability of mixtures prepared with low-quality aggregates. This possibility is currently being investigated at Ohio State University. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 27-31
  • Monograph Title: Copper mill tailings, incinerator residue, low-quality aggregate characteristics and energy savings in construction
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00316671
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Oct 27 1980 12:00AM