DETERMINATION OF STATISTICAL PARAMETERS FOR HIGHWAY CONSTRUCTION (CONTINUATION II). INTERIM REPORT FOR PERIOD APRIL 1968 TO APRIL 1970

THIS REPORT PRESENTS IN PART I, THE DETERMINATION OF ADDITIONAL STATISTICAL PARAMETERS FOR WEST VIRGINIA HIGHWAY CONSTRUCTION AND COMPARES THESE VALUES WITH THOSE PREVIOUSLY DETERMINED, AND INCLUDES FINDINGS OF DESIGNED EXPERIMENTS PERFORMED TO DETERMINE THE PATTERN OF VARIATIONS OF DENSITY OF BITUMINOUS CONCRETE PAVEMENTS, SUBGRADES AND EMBANKMENTS. PART II REPORTS THE RESULTS OF A SERIES OF DESIGNED LABORATORY EXPERIMENTS THAT INVESTIGATED THE RELIABILITY OF PREDICTING THE POTENTIAL STRENGTH OF CONCRETE. A SERIES OF DENSITY MEASUREMENTS CONFIRMED THE LARGE VARIATION OF DENSITY ACROSS THE WIDTH OF BITUMINOUS PAVING LANES AND REVEALED THAT THE PATTERN OF VARIATION IS CHANGED BY THE EFFECT OF TRAFFIC, THE DENSITY IS FAIRLY UNIFORM WITH SMALL AREAS BUT VARIES FROM AREA TO AREA. WHEREAS THE OPPOSITE PATTERN WAS FOUND IN DENSITY OF EMBANKMENT. THE DENSITY FOR A SUBGRADE WAS FOUND TO BE ESSENTIALLY RANDOM. TESTS ON PORTLAND CEMENT CONCRETE USED IN STRUCTURES INDICATED AN AVERAGE LEVEL OF COMPRESSIVE STRENGTH BUT ONE PROJECT HAD EXCESSIVE VARIATION. WITHIN TEST VARIABILITY OR TESTING ERROR WAS HIGHER THAN SHOULD BE EXPECTED. TESTS WITH THE KELLY BALL AND CHASE AIR METER COMPARED TO SLUMP CONE AND ROLL-A-METER REVEALED SOME ANOMOLIES. /AUTHOR/

  • Corporate Authors:

    Materials Research & Development Inc

    ,    

    West Virginia State Road Commission

    1900 Kanawha Boulevard East
    Charleston, WV  United States  25305-0440

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Bowery, F J
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00214506
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Jul 14 1970 12:00AM