FIRST REPORT OF A CONTINUING TYPE B STUDY-AN EVALUATION OF ROAD MARKING MATERIAL

SEVENTEEN COMMERCIAL TRAFFIC PAINT FORMULATIONS WERE SUPPLIED WHICH WERE EVALUATED ON THREE TYPES OF ROADWAY SURFACES WITH THE PRESENT STATE SPECIFICATION PAINTS AS A CONTROL. THE STATE PAINT WAS USED FOR STUDIES OF FILM THICKNESS AND APPLICATION RATES FOR BEADS. SOME SECTIONS OF TEST PAINTS HAVE BEEN IN PLACE FOR LESS THAN A YEAR, THEREFORE A COMPLETE EVALUATION WAS NOT ATTEMPTED. THE STUDY OF GLASS MARKING BEADS INDICATES BETTER REFLECTION IS OBTAINED WITH GLASS SPHERES HAVING A HIGH INDEX OF REFRACTION. SIX POUNDS OF BEADS PER GALLON AND FIFTEEN MILS WET FILM THICKNESS PROVIDED THE MOST DURABLE STRIPE. BISYMMETRIC BEADS PROVIDE BETTER INITIAL REFLECTANCE BECAUSE THEY DO NOT BECOME COVERED WITH PAINT DURING APPLICATION AS DO MOST OTHER BEADS. WHEN THE EXISTING STRIP IS MISSING OR VERY POOR THE FIFTEEN MIL FILM THICKNESS STRIPE SHOULD BE PLACED. /AUTHOR/

• Corporate Authors:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Mississippi State Highway Department

  P.O. Box 1850
  Jackson, MI  United States  39215
• Authors:
  • Lanz, L J
  • Davis, J H
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Films (Coatings); Glass beads; Road marking materials; Surface course (Pavements); Thickness; Traffic paint
• Uncontrolled Terms: Film thickness
• Old TRIS Terms: Traffic marking materials
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215975
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Study No 52
• Files: TRIS, USDOT, STATEDOT
• Created Date: Feb 15 1972 12:00AM