THE DETERMINATION OF SOIL PROPERTIES IN SITU

THREE METHODS FOR IN SITU TESTING OF SOIL PROPERTIES HAVE BEEN EXAMINED TO DETERMINE WHETHER THE RESULTS OBTAINED WITH THEM COULD BE CORRELATED. THE MENARD PRESSUREMETER WAS NOT AVAILABLE FOR FIELD TESTING AND WAS STUDIED BY REVIEW OF PREVIOUS RESEARCH. IT UTILIZES THE CONCEPT OF STRESSING THE WALLS OF A BOREHOLE AND DETERMINING THE ACCOMPANYING DEFORMATION OF THE SURROUNDING MATERIAL. CONE PENETRATION TEST OF THE TEXAS HIGHWAY DEPARTMENT UTILIZES A PENETROMETER CONE 3 INCHES IN DIAMETER ATTACHED TO A DRILL STEM 2.375 INCHES IN DIAMETER AND LOWERED TO THE BOTTOM OF THE TEST HOLE. AN AUTOMATIC TRIPPING MECHANISM WITH A 170-POUND HAMMER IS PLACED ON TOP OF THE ANVIL. THE UNIVERSITY OF TEXAS IN SITU DEVICE WAS DESIGNED TO SHEAR THE SOIL AND TO MEASURE THE MAXIMUM SHEARING RESISTANCE OFFERED BY THE SOIL UNDER KNOWN NORMAL PRESSURES. FOR EACH DEVICE THERE IS A DESCRIPTION OF EQUIPMENT AND TESTING PROCEDURES, DATA ANALYSIS, AND LIMITATIONS OF THE METHOD'S USE. RESULTS OBTAINED WITH THE THD PENETROMETER ARE WELL CORRELATED WITH MAXIMUM LOAD TRANSFER VALUES OBTAINED FROM TESTS OF INSTRUMENTED DRILL SHAFTS. SHEARING RESISTANCES OBTAINED FROM FIELD TESTING OF THE UT IN SITU DEVICE DO NOT CORRELATE WELL WITH CONVENTIONAL LABORATORY TEST RESULTS, WITH PENETRATION RESISTANCE MEASURED BY THE THD CONE, OR WITH LOAD TRANSFER DATA. IT IS RECOMMENDED THAT THE MENARD DEVICE BE OBTAINED FOR FIELD TRIALS AND THAT USE OF THE UNIVERSITY OF TEXAS DEVICE BE DISCONTINUED.

  • Supplemental Notes:
    • Res Rept 89-7 61 PP, 2 FIG, 2 TAB, 4 PHOT, 34 REF
  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  USA  78712
  • Authors:
    • Campbell, D B
    • Hudson, W R
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00229907
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 28 1970 12:00AM