HAND-FEEL TESTS FOR GUIDING THE COMPACTION OF SOILS

A CLASSIFICATION SYSTEM IS PROPOSED IN WHICH GROUPINGS ARE BASED ON THE PATTERNS OF OPTIMUM COMPACTION MOISTURE, AND WHICH IS SIMPLE ENOUGH THAT HAND TESTS MAYBE USED IN THE FIELD TO IMPLEMENT IT. THE SIX GROUPS ARE: SHOT ROCK OR BOULDERS; CLEAN SAND OR GRAVEL; SAND OR GRAVEL WITH SILT FINES; SAND OR GRAVEL WITH CLAY FINES; CLAY; AND SILT. IDENTIFYING HAND TESTS ARE OUTLINED AND RULES FOR OPTIMUM MOISTURE ARE GIVEN. CLEAN GRANULAR SOILS ARE BEST COMPACTED SOPPING WET. THE ACCURACY AND WORTH OF LABORATORY TESTS ARE QUESTIONED AND A FIELD PROCEDURE FOR JUDGING COMPACTION IS DESCRIBED. THE FIELD IDENTIFICATION OF THE VARIOUS SOILS ARE DISCUSSED. THE SHAKING TEST, STIFFNESS TEST, DRYING RATE, DRY STRENGTH TEST, AND THE HAND WASHING TEST MAY BE USED TO SORT SILTS FROM CLAYS. THE TRANSITION FROM MIXED SOILS TO FINE SOILS AND THE OPTIMUM MOISTURES FOR HIGHER SOIL DENSITIES IS REVIEWED. COMPACTOR RECOMMENDATIONS FOR INDIVIDUAL SOIL GROUPS BASED ON PERSONAL OBSERVATION AS WELL AS FIELD DATA AND PUBLISHED LITERATURE ARE PRESENTED.

Media Info

  • Features: Figures; References;
  • Pagination: p. 109-22

Subject/Index Terms

Filing Info

  • Accession Number: 00230154
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 4 1973 12:00AM