A STUDY OF ACTIVE CLAYS AS RELATED TO HIGHWAY DESIGN

IN 1967, THE MISSISSIPPI STATE HIGHWAY DEPARTMENT AND MISSISSIPPI STATE UNIVERSITY INITIATED A 5 YEAR RESEARCH PROJECT ENTITLED "A STUDY OF ACTIVE CLAYS AS RELATED TO HIGHWAY DESIGN". THIS PROJECT WAS SPONSORED BY THE FEDERAL HIGHWAY ADMINISTRATION. A 4400-FOOT SECTION, CONSISTING OF TWO CUTS AND TWO FILLS OF A PROPOSED HIGHWAY, WAS SELECTED AS THE TEST SITE. THE NATURAL SOIL IN THE AREA OF THE PROJECT IS THE YAZOO CLAY, A HIGHLY EXPANSIVE MONTMORILLONITE CLAY. NINETY-FIVE BORINGS WERE MADE THROUGHOUT THE T*ST SITE IN ORDER TO ADEQUATELY DEFINE THE STRATIFICATION AND TO PROVIDE UNDISTURBED SAMPLES FOR AN EXTENSIVE LABORATORY TESTING PROGRAM WHICH CONCENTRATED ON SWELL TESTS. IN ORDER TO PREDICT THE POTENTIAL MOVEMENT, 860 SWELL TESTS WER CONDUCTED. DIFFERENT TREATMENTS WERE USED DURING CONSTRUCTION. THESE INCLUDED A BITUMINOUS MEMBRANE SECTION, A FLOODED SAND DRAIN SECTION AND A SECTION OF LIME TREATMENT (NORMAL CONSTRUCTION). THESE SECTIONS WERE HEAVILY INSTRUMENTED IN ORDER TO MONITOR MOISTURE CHANGES AND SURFACE HEAVE. DATA WERE OBTAINED DURING CONSTRUCTION WHICH WAS COMPLETED IN 1970 AND SUBSEQUENTLY SINCE THAT DATE. RESULTS SHOW THAT THE METHOD OF PREDICTION OF SWELL PRODUCED ACCURACY WITHIN REASONABLE LIMITS. ANALYSES OF THE VARIOUS TREATMENTS USED IN THE RESEARCH PROJECT HAVE PROVIDED A NEW DESIGN WHICH SHOWS CONSIDERABLE PROMISE FOR ELIMINATING THE INHERENT PROBLEMS OF CONSTRUCTION OF HIGHWAYS OVER EXPANSIVE CLAYS IN MISSISSIPPI.

  • Supplemental Notes:
    • Rept MSHD-RD-72-045
  • Corporate Authors:

    Mississippi State Highway Department

    Research and Development Division, P.O. Box 1850
    Jackson, MI  USA  39215
  • Authors:
    • Teng, T C
    • MATTOX, R M
    • Clisby, M B
  • Publication Date: 1972-9

Media Info

  • Pagination: 134 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00237233
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Final Rept
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: May 15 1974 12:00AM