FILL SETTLEMENT IN PEAT MARSHES

RESULTS OF THE CLASSIFICATION OF PEAT STRATA ARE PRESENTED IN A TABLE ENTITLED STRUCTURAL UNITS OF PEAT DEPOSITS AND SOME OF THEIR PHYSICAL CHARACTERISTICS. AS WITH MOST PEATS, ON EXPOSURE TO AIR AND DRYING, THE MATERIAL SPEEDILY LOSES ITS CHARACTER BY OXIDATION. THE OUTSTANDING CHARACTERISTICS OF FIBROUS LAYERS OF PEAT IS THEIR MATTED OR FELT-LIKE POROUS NATURE, WHICH HAS ITS ORIGIN IN THE SLIGHTED ALTERED REMAINS OF ROOTS, ROOTLETS AND RHEZONES OF HERBS AND FROM MOSSES. WOODY PEAT MAY OCCUR EITHER AS THE DOMINANT COMPONENT OR AS A PROMINENT ADMIXTURE IN OTHER TYPES. IN CARRYING OUT THE STUDY OF FILL SETTLEMENT IT WAS DECIDED TO CROSS-SECTION THE MARSH ACCURATELY BY BORINGS WHICH SHOULD SHOW THE VARIOUS PEAT LAYERINGS AND THE EXACT POSITION OF THE FILLED MATERIAL WITH REFERENCE TO THEM. FILLS OVER 8 DIFFERENT PEAT DEPOSITS WERE CROSS-SECTIONED AT 83 DIFFERENT POINTS WHERE THE DEPTHS OF THE PEAT DEPOSITS RANGED FROM 1 TO 66 FEET. SAMPLES OF THE DIFFERENT PEAT LAYERS WERE COLLECTED AT VARIOUS DEPTHS AND SENT TO THE LABORATORY FOR PHYSICAL TESTS. IT WAS FOUND THAT SETTLEMENT CAN BE ESTIMATED FROM SOUNDINGS, GIVING DEPTH OF PEAT AND LACUSTRINE CLAY. TO SAVE EARTH WORK NARROW FILLS SHOULD BE FORCED INTO THE PEAT TO AS GREAT A DEPTH AS POSSIBLE TO COMPRESS PEAT ON BOTH SIDES BEFORE EMBANKMENT IS COMPLETED.

  • Supplemental Notes:
    • Vol 6, pp 93-113, 9 FIG, 1 TAB
  • Authors:
    • Burton, V R
  • Publication Date: 1927

Media Info

  • Monograph Title: Proceedings of the Sixth Annual Meeting of the Highway Research Board Held at Washington, D.C., December 2-3, 1926
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00232866
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jun 11 1971 12:00AM