STRESSES AND DEFLECTIONS IN STABILIZED SOIL LAYERS

THE IMPROVEMENT OF THE ENGINEERING PROPERTIES OF THREE HIGHLY PLASTIC CLAYEY SOILS RESULTING FROM STABILIZATION WITH PORTLAND CEMENT, HYDRATED LIME AND CONJUNCTIVELY WITH SODIUM HYDROXIDE WAS MEASURED IN TERMS OF STRENGTH BENEFICIATION. THE 28-DAY UNCONFINED COMPRESSIVE STRENGTHS ROSE TO THE 120 TO 750-PSI RANGE. THESE RESULTS IMPLY THAT WHEN SIMILAR STABILIZATION RESPONSES ARE ESTABLISHED, THE SOIL USED AS A BASE RESEMBLES A SEMIRIGID BEAM RESTING ON A SUBGRADE BEHAVING LIKE AN ELASTIC FOUNDATION. TO DETERMINE THE STRESSES IN THE STABILIZED SOIL BASE, A NEW METHOD IS SUGGESTED WHEREBY USE IS MADE OF WESTERGAARDS PLATE THEORY AND WINKLERS BEAM-ON-ELASTIC FOUNDATION MODEL. FIRST THE STRESSES INDUCED BY A SURFACE POINT LOAD ARE CALCULATED, ASSUMING THAT THE PLATE THEORY HOLDS TRUE. THEN THE WINKLER MODEL IS APPLIED TO A SECTION OF THE BASE HAVING A FINITE BEAM LENGTH EQUAL TO THE WIDTH OF THE PAVEMENT AND AN UNKNOWN BEAM WIDTH BE. THE STRESS IS CALCULATED IN TERMS OF THE WIDTH. BY EQUATING THE TWO STRESSES, THE EQUIVALENT BEAM WIDTH IS ESTABLISHED. GRAPHS AND TABLES OF STRESSES ARE PRESENTED FOR A 10,000-LB WHEEL LOAD AT 75-PSI TIRE PRESSURE WITH VARIOUS COMBINATIONS OF MODULUS OF ELASTICITY, SUBGRADE REACTION AND LAYER THICKNESS. A SET OF DEFLECTION PARAMETERS WAS CALCULATED AND COMPARED TO A SET OF PCA FIELD DATA. THE THEORETICAL RESULTS ARE IN AGREEMENT WITH THE EXPERIMENTAL DATA. /AUTHOR/

  • Digital Copy:
  • Supplemental Notes:
    • Paper sponsored by Committee on Strength and Deformation Characteristics of Pavement Sections and presented at the 46th Annual Meeting.
  • Authors:
    • Harris, Billy J
    • Laguros, Joakim G
  • Publication Date: 1967

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 65-75
  • Monograph Title: Behavior: Piles, stabilized soils, and remolded clays and CBR sampling
  • Serial:

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Filing Info

  • Accession Number: 00233941
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Nov 26 1994 12:00AM