This paper reviews the development of field loading tests to measure the bearing capacity of soil masses and pavements supported by soil masses. Time, load, settlement or deflection, and the size of the bearing area are the four basic quantities which must be measured to determine load bearing capacity. The relationship between these variables has been clearly and accurately established by more than forty years of research and practice by various agencies. This primary objective and the corollary requirement of field verification have been achieved by an exhaustive study of data from the Hybla Valley project where both field loading tests on the pavement structure and laboratory tests of the materials in each component of the pavement were available. In every case including subgrade, base course, and the bituminous surface, the stress reactions and soil resistance coefficients measured by the field loading tests could be computed from the laboratory tests within an acceptable range of accuracy for the materials involved and the normal experimental error which would be expected in comparing field and laboratory tests. The test results under discussion, available since 1936, provide a body of experimental evidence to be evaluated which cannot be passed over without careful study. For many years internal stability based on these data has been successfully applied in design of caissons and high capacity bearing piles supported on highly consolidated granular soils and granular cohesive mixtures. These practical applications have demonstrated that these materials will develop internal stability up to the crushing strength of the grains without lateral displacement. It should be recognized that the vital role of such granular materials and mixtures becomes a controlling factor in design of flexible asphalt pavements.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 739-785

Subject/Index Terms

Filing Info

  • Accession Number: 00170247
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Mar 29 1978 12:00AM