On June 18, 1971, approximately 135 tons of Glasphalt were laid as a 2.5 in. (6.35 cm) overlay course on a strip of pavement which carried about 6000 vehicles per day in each direction at 30 mph official speed. It was estimated that 95% were light vehicles and 5% were buses and trucks. The Glasphalt's temperature on the job site varied between 270 and 290 degrees F (132 and 143 degrees C). The mix was tender and required a cooling period before rolling. The surface failed. It was postulated that the geometry of the glass particles was the chief reason for failure. The loss of surface material was attributed to one or more of the following: (1) relatively high traffic volume and speed; (2) use of chains and studded tires; and (3) loss of adhesion between asphalt and glass which may be due to a high air void content that permits easier assess of water and accelerates the rate of oxidation of the asphalt.

  • Authors:
    • Kaller, J J
  • Publication Date: 1972

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Filing Info

  • Accession Number: 00096451
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 13 1975 12:00AM