TESTS ON SOIL-CEMENT AND CEMENT-MODIFIED BASES IN MINNESOTA

THE MINNESOTA DEPARTMENT OF HIGHWAYS CONSTRUCTED AN EXPERIMENTAL ROAD WHICH INCLUDED SOIL-CEMENT AND CEMENT- MODIFIED BASES. DESIGN VARIABLES WERE CEMENT CONTENT, THICKNESS OF BASE, AND TIME BETWEEN PLACEMENT AND COMPACTION. THE PAVEMENTS WERE EVALUATED IN TERMS OF DEFLECTIONS MEASURED IN PLATE LOAD TESTS, BENKELMAN BEAM TESTS, AND STATIC AND MOVING VEHICLE LOAD TESTS. THE DATA SHOWED GOOD CORRELATION WITH A PCA LABORATORY-DEVELOPED EQUATION FOR PREDICTION OF DEFLECTION. ELASTIC LAYER THEORY BY WESTERGAARD AND BY BURMISTER SHOWED LOW CORRELATION WITH THE TEST RESULTS. CEMENT CONTENT INFLUENCED SIGNIFICANTLY THE PERFORMANCE AND DURABILITY OF THE PAVEMENTS. INCREASING BASE THICKNESS ABOVE 6 IN. WAS OF SIGNIFICANCE WHEN CEMENT CONTENT OF THE MATERIAL WAS LOW BUT HAD LITTLE INFLUENCE WHEN THE MATERIAL WAS SOIL-CEMENT. AS EXPECTED, EXCESSIVE COMPACTION DELAYS OF 36 TO 72 HOURS HAD A DETRIMENTAL INFLUENCE ON THE STRENGTH CHARACTERISTICS OF THE PAVEMENTS. IN THE MOVING LOAD TESTS DEFLECTIONS DECREASED WITH INCREASED VEHICLE SPEED. THE MAJOR PORTION OF THE DECREASE TOOK PLACE BETWEEN STANDING LOAD AND 2 MPH. /AUTHOR/

  • Supplemental Notes:
    • Vol 9, No 1, PP 25-47
  • Authors:
    • Larsen, T J
  • Publication Date: 1967-1

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  • Accession Number: 00206627
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 5 1994 12:00AM