A DEFININTION OF ORGANIC SOILS (AN ENGINEERING IDENTIFICATION)

CLASSIFICATION SYSTEMS HAVE BEEN USED TO CORRELATE THE PHYSICAL PROPERTIES OF A SOIL WITH ITS STRUCTURAL PERFORMANCE. SINCE NO EXTENSIVE ENGINEERING CLASSIFICATION SYSTEM EXISTS FOR ORGANIC SOILS, UNCERTAINTY REIGNS IN THE DESIGN OF STRUCTURES FOUNDED ON THESE MATERIALS. IN THIS STUDY THE PHYSICAL PROPERTIES OF ORGANIC SOILS WERE EVALUATED BY AN EXTENSIVE TESTING PROGRAM AS A GENERAL APPROACH TO AN INGINEERING CLASSIFICATION SYSTEM. SEVERAL PREVIOUSLY UNKNOWN CHARACTERISTICS OF ORGANIC SOILS WERE FOUND. FOLLOWING A COMPREHENSIVE LITERATURE SEARCH CONCERNING THE PHYSICAL CHARACTERISTICS OF ORGANIC SOILS, LABORATORY TESTING EVALUATED THEIR ENGINEERING CHARACTERISTICS. SOME OF THESE CHARACTERISTICS (STRENGTH, CONSOLIDATION, ETC.) DID NOT FOLLOW THE GENERAL ASSUMPTIONS THAT HAVE BEEN USED BY ENGINEERS IN THE PAST. ONE OF THE CONCLUSIONS IS THAT SOILS WHICH CONTAIN AS MUCH AS 20 PER CENT ORGANIC MATERIAL MAY BE USED AS FOUNDATION MATERIAL WITHOUT ILL EFFECTS. A CORRELATION WAS ESTABLISHED BETWEEN WATER CONTENT, WATER ABSORPTION, AND PH OF ORGANIC SOILS. IT WAS FOUND THAT THE PRESENT-DAY COMBUSTION METHODS OF DETERMINING ORGANIC CONTENT ARE IN ERROR; COMBUSTION AT 440 C IS RECOMMENDED. FROM AN ENGINEERING STANDPOINT, THE CHARACTER, SOURCE, OR ENVIRONMENT OF THE ORGANIC MATTER IN SOILS IS OF SECONDARY IMPORTANCE. /AUTHOR/

  • Corporate Authors:

    Louisiana State University and Agriculture & Mechanical College, Baton Rouge

    Baton Rouge, LA  United States  70803

    Louisiana Department of Highways

    P.O. Box 44245, Capitol Station
    Baton Rouge, LA  United States  70804

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Arman, A
  • Publication Date: 0

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Filing Info

  • Accession Number: 00228646
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Aug 15 2004 2:08AM