EXPERIMENTAL BITUMINOUS CONCRETE PAVEMENT STUDY, RTE. I-84, SOUTHBURY-MIDDLEBURY REPORT 2, ANALYSIS OF VARIOUS DATA OBTAINED DURING AND AFTER CONSTRUCTION

STUDY WAS CONDUCTED TO DETERMINE TO WHAT EXTENT THE FINDINGS OF THE AASHO ROAD TEST APPLIED TO THE DESIGN, CONSTRUCTION, AND SERVICEABILITY OF FLEXIBLE PAVEMENTS IN CONNECTICUT. AN ANALYSIS OF DEFLECTION DATA OF INTERSTATE I-84 SHOWS CONSIDERABLE VARIATION IN THE ABILITY OF THE STONE BASE TO DISTRIBUTE 11,400 POUND WHEEL LOADS NOT ONLY BETWEEN THE VARIOUS DESIGNS BUT WITHIN ANY ONE DESIGN ITSELF. THIS VARIATION IS ATTRIBUTED TO THE METHOD OF CONSTRUCTING THE BASE WITH POSSIBLE LACK OF COMPACTION IN AREAS OF THE EMBANKMENT AND GRAVEL SUBBASE CONTRIBUTING TO A LESSER DEGREE. BITUMINOUS CONCRETE SURFACE HAS AN INHERENT ABILITY TO INCREASE THE OVERALL STIFFNESS OF THE STRUCTURE. THIS QUALITY SEEMS TO BE UTILIZED IN THE WEAKER PAVEMENT STRUCTURES. PAVEMENT SURFACE DEPTHS, AS ANALYZED FROM THE CORES OF THE EXPERIMENTAL SECTIONS, VARY CONSIDERABLY FROM THE PLUS OR MINUS 0.5 INCH TOLERANCE SPECIFIED. THIS TOLERANCE FROM THE DEFLECTION RESULTS SHOULD PROVIDE A RELIABLE BASIS FOR JUDGING THE PAVEMENT PERFORMANCE. THE VARIATIONS IN PAVEMENT DEPTH ARE ATTRIBUTED MAINLY TO IRREGULARITY IN THE SURFACE OF THE STONE BASE. RESULTS OF DEFLECTION OBSERVATIONS OVER PLANT-MIXED STONE BASE ON I-95 INDICATED SUCH A MARKED REDUCTION IN UNIFORMITY FROM THOSE OBTAINED OVER THE STONE BASE THAT THE DATA ARE INCLUDED. CONSIDERABLE DEFLECTION AND BITUMINOUS CONCRETE PAVEMENT DATA ARE PRESENTED.

  • Supplemental Notes:
    • Hpr-1 (5), STATE 132-02, BPR 7
  • Corporate Authors:

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Sternberg, F
  • Publication Date: 1968-2

Subject/Index Terms

Filing Info

  • Accession Number: 00206351
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Mar 5 1994 12:00AM