The Waterways Experiment Station employed the "raining" technique, involving free fall of sand to the specimen surface. Fot the gradation of sands used in this experiment, the circular rainer with a perforated plate was found to be the most satisfactory rainer and was adopted for the remainder of the study. Additional study study is required to develop a placement technique that will be satisfactory for placing gap graded and well-graded cohesionless soils homogeneously. As a result of this work it has become apparent that particular attention must be paid to uniformity of density within a lift for large size, laboratory constructed specimens of cohesionless material. In particular, the assumption of uniform density and the determination of a single density value in each lift could lead to misinterpretation of results in model tests in large specimens, where results may be influenced by local areas of varying density. /ASCE/

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00134650
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #11985
  • Files: TRIS
  • Created Date: Jun 23 1976 12:00AM