CORRECTING PAVEMENT PUMPING BY MUD JACKING

THIS REPORT COVERS SOME FIELD EXPERIMENTS DESIGNED TO CORRECT THE PUMPING ACTION OF RIGID PAVEMENT SLABS. IN 1942 A PERFORMANCE SURVEY WAS MADE ON A PORTION OF U.S. 30 BETWEEN U.S. 41 AND VALPARAISO, INDIANA, COVERING DETAILED ANALYSES OF PUMPING CONDITIONS ON TWENTY-FOUR MILES OF THIS ROAD. AMONG OTHER THINGS, THE RESULTS SHOWED THAT ALL OF THE EXPERIMENTAL SUBGRADE TREATMENTS (WITH THE EXCEPTION OF THE WATER-SATURATED SECTION) WERE SUCCESSFUL IN MINIMIZING OR ELIMINATING PUMPING AND THAT PUMPING PREVAILED ON UNTREATED SECTIONS WHERE THE PAVEMENT WAS CONSTRUCTED ON SILTY-CLAY SOILS. FOLLOWING THIS SURVEY, A SERIES OF JOINTS, IN A TWO-MILE SECTION NEAR THE LAKE-PORTER COUNTY LINE, WAS SELECTED FOR TREATMENT BY MUDJACKING. FOUR MIXES WERE USED. THE MOST RECENT PERFORMANCE SURVEY OF THIS TWO-MILE SECTION (OCT.-NOV. 1944) SHOWED THAT PUMPING HAD BEEN REDUCED CONSIDERABLY. HOWEVER, THE INSTALLATION OF SUBGRADE DRAINS ON U.S. NO. 30 BETWEEN S.R. 49 AND S.R. 53 TOGETHER WITH A PARTICULARLY DRY YEAR (1944) MADE IT DIFFICULT TO RATE THE SUCCESS ON THE BASIS OF PUMPING ALONE. THE SETTLEMENT AT THE JOINTS OF BOTH TREATED AND UNTREATED SLABS SHOWED CONSIDERABLE SUCCESS FOR MUDJACK TREATMENT. A CRACK SURVEY SHOWED THAT MUDJACKING HAD BEEN SUCCESSFUL IN REDUCING THE EXPECTED NUMBER OF CRACKS ON THIS TWO-MILE SECTION. THE DATA FURTHER SHOW THAT CRACKS WITHIN 13 FT. OF A JOINT ARE CAUSED BY SLAB MOVEMENT AND PUMPING, AND THAT CRACKS IN THE MIDDLE THIRD OF A SLAB ARE FROM CAUSES OTHER THAN PUMPING. /AUTHOR/

  • Supplemental Notes:
    • Res Rept 1d, PP 13-54, 39 FIG, 6 TAB, 3 REF, 1 APP
  • Authors:
    • Frost, R E
  • Publication Date: 1945

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  • Accession Number: 00218894
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 29 1972 12:00AM