FACTORS INFLUENCING VIBRATORY COMPACTION OF COHESIONLESS SOILS

Field data are given for 22 test fills made of medium-to- fine uniform sand and compacted by 7 models of vibratory compactors. The final relative density is correlated with lift thickness, number of coverages, total static plus dynamic force applied by the compactor, towing speed, and operating frequency. There is considerable scatter in these correlations because of difficulties in determination of in situ relative density, heterogeneity in the degree of compactness of sand, variation of the depth at which the relative density is determined, and lack of sufficient data when a single variable is studied and other variables are fixed. However, the data indicate that the final relative density increases as operating frequency, total applied force, or the number of coverages increases. The variation in lift thickness up to 1 ft (0.3 m) has no significant effect on this density, but an increase in towing speed reduces it. A study of the trends of the relationships between final relative density and the various variables a demensionless and statistical analysis establish a correlation between the final relative density and a factor expressing the joint effect of the important properties of the soil, compactor, and compaction procedure. Such correlations, when available and justified, help in the choice of the compactor or compaction procedure for a given job.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 88-96
  • Monograph Title: SOIL AND ROCK MECHANICS, CULVERTS AND COMPACTION
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00129495
  • Record Type: Publication
  • ISBN: 0309024536
  • Files: TRIS, TRB
  • Created Date: Mar 10 1976 12:00AM