DYNAMIC TESTS ON THE STABILITY OF BITUMINOUS MIXTURES FOR PAVEMENT AT LOW TEMPERATURES

USING SEVERAL TECHNIQUES DEVELOPED BY THE AUTHORS, DETERMINATION WAS MADE OF THE PHYSICAL PROPERTIES OF BITUMINOUS MIXTURES FOR ROAD PAVEMENT AT VARIOUS LOW TEMPERATURES, THE SENSITIVITY OF MIXTURES TO THOSE TEMPERATURES AND THE RESISTANCE AGAINST FREEZING AND THAWING ACTIONS. OBSERVATIONS WERE MADE ON THE EFFECTS OF DROP- HAMMER IMPACT USING A MODIFIED PAGE IMPACT-TESTING MACHINE. OTHER DYNAMIC TESTS USING AN IZOD AND A CHARPY IMPACT- TESTING MACHINE AND A SONIC APPARATUS WERE PERFORMED. FOR COMPARISON A HUBBARD STABILITY STATIC TEST WAS ALSO MADE. AS TO THE RESULTS, IT HAS BEEN FOUND THAT THE TOUGHNESS STABILITY AND DYNAMIC MODULUS OF ELASTICITY OF BITUMINOUS MIXTURES VARIED ACCORDING TO VARIATION OF TEMPERATURE. EACH MACHINE TYPICALLY INDICATED THESE CHARACTERISTICS, BUT THERE WERE CONSIDERABLE DIFFERENCES BETWEEN THE DYNAMIC AND THE STATIC TESTS. IT WAS FOUND THAT THE SONIC APPARATUS WAS HIGHLY SUITABLE FOR ESTIMATION OF STABILITY OF BITUMINOUS MIXTURES AND THAT DYNAMIC TESTS WERE A MOST-REASONABLE PROCEDURE FOR DETERMINATION OF THE COMPOSITION OF MIXTURES IN THEIR USE FOR HIGHWAY PAVEMENTS. THE ULTIMATE OBJECTIVES OF THIS WORK IN TESTING OF BITUMINOUS MIXTURES WERE TO /1/ ESTABLISH SUITABLE PROCEDURES FOR TESTING BITUMINOUS MIXTURES AT LOW TEMPERATURES, /2/ FIND OUT THE OPTIMUM ASPHALT CONTENT, /3/ DETERMINE BITUMINOUS MIXTURES SUITABLE FOR PAVEMENT IN COLD DISTRICTS, AND /4/ DEVELOP ADEQUATE PRACTICES FOR OVERCOMING FAILURES UNDER THE IMPACT OF HIGH- SPEED TRAFFIC AND THE OTHER BASIC DAMAGES DONE TO PAVEMENT IN COLD WEATHER. /AUTHOR/

  • Supplemental Notes:
    • Vol 9, No 4, PP 575-615
  • Authors:
    • Itakura, C
    • Sugawara, T
  • Publication Date: 1954-11

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  • Accession Number: 00210857
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 13 1994 12:00AM