PUMPING OF CONCRETE PAVEMENTS IN TENNESSEE

A COOPERATIVE STUDY WAS MADE DURING MARCH AND APRIL, 1944 TO DETERMINE THE NATURE, EXTENT, CAUSE AND REMEDY OF PUMPING IN TENNESSEE. APPROXIMATELY 290 MILES OF PAVEMENT ON THE MAIN TRAFFIC ROUTES CONNECTING THE PRINCIPAL CITIES WERE STUDIED IN THE SURVEY. THE PROJECTS STUDIED WERE REPRESENTATIVE OF THE RANGE OF TRAFFIC, LOADING, PAVEMENT DESIGNS AND SUBGRADE SOILS ENCOUNTERED OVER THE STATE. RECONNAISSANCE SURVEYS WERE MADE TO OBTAIN A QUANTITATIVE MEASURE OF PUMPING OF PAVEMENTS UNDER DIFFERENT TRAFFIC LOADS ON VARIOUS SOIL TYPES. THREE STAGES OF CLASSES OF PUMPING WERE RECOGNIZED; SLAB ENDS WHERE PUMPING OCCURRED WITHOUT ACCOMPANYING FAULTING; PUMPING ACCOMPANIED BY FAULTING; AND PUMPING AND FAULTING ACCOMPANIED BY A BROKEN SLAB END. THE RECONNAISSANCE SURVEYS WERE FOLLOWED BY DETAIL STUDIES OF TRAFFIC, PAVEMENT DESIGN AND SOILS ON INDIVIDUAL PROJECTS. SECTIONS ON INDIVIDUAL PROJECTS WERE MAPPED AND SAMPLED. MAPPING INCLUDED SKETCHES SHOWING PAVEMENT JOINTING, CRACKING, PUMPING, TYPICAL SOIL SECTION, LOCATION OF SAMPLING, WITH NOTES ON SOIL CONDITION AND PERTINENT CONSTRUCTION DATA. UNDISTURBED AS WELL AS DISTURBED SOIL SAMPLES AND WATER CONTENT SAMPLES WERE TAKEN FROM UNDER BOTH PUMPING AND NON-PUMPING JOINTS AND CRACKS. DENSITY TESTS, ROUTINE SOIL-CONSTANT TESTS, MECHANICAL ANALYSIS, COMPACTION TESTS, CONSOLIDATION TESTS AND TRIAXIAL COMPRESSION TESTS WERE MADE TO DETERMINE THE RELATIONSHIPS BETWEEN SOIL TYPES, SOIL CONDITION AND PUMPING. /AUTHOR/

  • Supplemental Notes:
    • Res Rept 1d, PP 109-130, 4 FIG, 8 TAB
  • Publication Date: 1945

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  • Accession Number: 00207413
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 29 1972 12:00AM