COMPACTION AND COMPRESSION CHARACTERISTICS OF MICACEOUS FINE SANDS AND SILTS

RESIDUAL SOILS DEVELOPED FROM METAMORPHIC AND IGNEOUS ROCKS FREQUENTLY CONTAIN LARGE AMOUNTS OF MICA, WHICH IS CONSIDERED DETRIMENTAL, BECAUSE SUCH MAY BE EXCESSIVELY COMPRESSIVE. HOWEVER, THE CRITICAL PERCENTAGES OF MICA FOR VARIOUS SOIL TYPES HAVE NOT BEEN DETERMINED. LABORATORY TESTS ON SYNTHETIC AND NATURAL MICACEOUS SOILS INDICATE THAT SOILS CONTAINING LESS THAN 10 PERCENT MICA AND COMPACTED TO MODIFIED PROCTOR DENSITIES SHOW NO SIGNIFICANT CHANGES IN DRY DENSITY OR COMPRESSIBILITY. WITH INCREASING MICA CONTENT, THE DRY DENSITY DECREASES AND THE COMPRESSIBILITY INCREASES. THE PRESENCE OF FINE MICA HAS A GREATER INFLUENCE ON COMPRESSIBILITY THAN COARSE MICA. CORRELATION OF RESULTS BETWEEN SYNTHETIC AND NATURAL SOILS APPEARS TO BE GOOD. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1963/22/22-003.pdf
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • McCarthy Jr, David F
  • Leonard, Roy J
• Conference:
  • 42nd Annual Conference of the Association for the Advancement of Automotive Medicine
  • Location: Charlottesville, Virginia
  • Date: 1998-10-5 to 1998-10-7
• Publication Date: 1963

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 23-37
• Monograph Title: Soil compaction
• Serial:
  • Highway Research Record
  • Issue Number: 22
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Compaction; Compressibility; Compression; Density; Fineness; Laboratory tests; Mica; Micaceous soils; Sand; Silts; Soil compaction test
• Uncontrolled Terms: Proctor compaction test
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00233642
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jul 1 1994 12:00AM