PROPERTIES OF HIGHWAY ASPHALTS-PT. II, VARIOUS PENETRATION

A TOTAL OF 323 ASPHALT SAMPLES FROM 105 REFINERIES WERE RECEIVED AND TESTED. RESULTS OF THE TESTS ON 146 SAMPLES OF THE 85-100 PENETRATION GRADE WERE REPORTED IN THE FIRST ARTICLE, PART I. THIS ARTICLE, PART II, INCLUDES THE RESULTS OF THE TESTS ON THE OTHER PENETRATION GRADES NAMELY, THE 60-70 GRADE ASPHALTS, THE 70-85 GRADE, 120-150 GRADE, AND 150-200 GRADE ASPHALTS. COMPARISONS OF THE CHARACTERISTICS OF SEVERAL GRADES INCLUDING THE 85-100 GRADE REPORTED IN PART I ARE ALSO INCLUDED. THESE DATA ESTABLISH THE RANGE FOR TEST VALUES THAT MAY BE EXPECTED FOR ASPHALTS ON A NATIONWIDE BASIS. THE SIGNIFICANCE OF THE WIDE DIFFERENCES EXISTING IN MATERIALS MEETING THE SAME SPECIFICATIONS, AND THE NEED FOR FURTHER RESEARCH TO ESTABLISH MORE ADEQUATE TEST METHODS AND SPECIFICATIONS, ARE DISCUSSED IN THIS ARTICLE. REFERENCES: PROPERTIES OF HIGHWAY ASPHALTS--PART I, 85-100 PENETRATION GRADE, J. YORK WELBORN AND WOODROW J. HALSTEAD, PUBLIC ROADS, VOL. 30, NO. 9, PP 197-507, AUGUST 1959.

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  • Supplemental Notes:
    • Vol 31, No 4, PP 73-85, 99
  • Authors:
    • Welborn, J Y
    • Halstead, W J
    • Boone, J G
  • Publication Date: 1960-10

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  • Accession Number: 00211008
  • Record Type: Publication
  • Source Agency: Highway Research Board Bibliography
  • Files: TRIS
  • Created Date: Apr 28 1994 12:00AM