TEST FOR THE ADHESION OF THERMOPLASTIC HIGHWAY-MARKING MATERIALS

A new method for evaluating the adhesion between thermoplastic highway-marking materials and pavement surfaces is described. The specimen consists of a small square block of paving material (e.g., Portland Cement concrete, asphaltic concrete, or some other) with a layer of thermoplastic bonded to one surface. An orifice penetrates the block and opens into a small circular area intentionally not bonded. A blister is formed by forcing fluid through the orifice until the diameter of the unbonded area begins to grow. The pressure used to inflate the blister and the height at the center of the blister are simultaneously recorded. From these measured data, the characteristic adhesive strain energy release rate is calculated. The analytical expressions necessary for the calculations are given, as is a discussion of the significance of the results to the highway engineer. Several exploratory tests were performed and the results are reported. The results demonstrate the sensitivity of the test to the adhesion of the thermoplastic to the pavement surface. Thus, the test can be used to quantify the effect on adhesive strength of those field conditions that can be reproduced in the laboratory. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 42-48
  • Monograph Title: Concrete, aggregates, marking materials, corrosion, and joint seals
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183530
  • Record Type: Publication
  • ISBN: 0309026806
  • Files: TRIS, TRB
  • Created Date: Dec 12 1978 12:00AM