PAVEMENT MARKING--DANISH STYLE

DANISH PRACTICES, IN TERMS OF PAVEMENT MARKINGS, ARE OUTSTANDING FROM THE STANDPOINT OF DAYTIME DELINEATION. ALL EXPRESSWAYS AND PRIMARY ROADS ARE MARKED WITH 20-IN.- WIDE EDGELINES, WHICH ARE HIGHLY VISIBLE BECAUSE OF THEIR SIZE AND THEIR CONTRAST WITH THE PREDOMINANTLY USED ASPHALTIC-CONCRETE RIDING SURFACES. THERMOPLASTIC MARKINGS ARE USED AND MAINTAINED EVEN IN COPENHAGEN. THE THERMOPLASTIC MATERIAL USED CONSISTS OF APPROXIMATELY 22 PER CENT ORGANIC BINDER, 5 PER CENT PIGMENT AND 73 PER CENT FINE AND COARSE FILLERS AND AGGREGATES. ONE OF THE THINGS THAT DISTINGUISHES THE DANISH THERMOPLASTIC FROM ITS ENGLISH AND AMERICAN COUTNERPARTS IS THE USE OF SYNTHETIC AGGREGATE CALLED SINOPAL IN ITS MANUFACTURE. IT IS A VERY HARD, WHITE, SKID-RESISTANT SYNTHETIC AGGREGATE THAT HAS VISIBILITY CHARACTERISTICS, PARTICULARLY WHEN WET, THAT ARE SUPERIOR TO NATURAL AGGREGATES. SINOPAL IS PRINCIPALLY USED AS AN ADMIXTURE TO THE AGGREGATE FRACTION OF ASPHALTIC CONCRETE TO PROVIDE SKID RESISTANCE AND BRIGHTNESS TO PAVEMENT SURFACES. THE THERMOPLASTIC MATERIAL IS A SOLID, IS MELTED AND HEATED AND APPLIED BY A SPREADER BOX THAT IS DRAWN ALONG THE ROAD SURFACE. A PRIMER IS EMPLOYED WHEN APPLICATIONS ARE MADE OVER PORTLAND-CEMENT CONCRETE. BECAUSE OF THE RAPID SOLIDIFICATION TIME OR THE THERMOPLASTIC, IT IS NOT NECESSARY TO USE WARNING CONES. THE LIFE OF THE THERMOPLASTIC MARKINGS IN COPENHAGEN IS CLOSELY RELATED TO THE TRAFFIC DENSITY ON NEW HIGHWAYS IN DENMARK, BECAUSE EDGELINE, A GROOVING MACHINE IS RUN ALONG THE EDGE TO PROVIDE THIS LINE, WHICH THE THERMOPLASTIC-APPLICATION MACHINE THEN FOLLOWS. BY DEPRESSING THE EDGE MARKING IN THIS FASHION, A MEANS FOR WATER RUNOFF IS PROVIDED AND DEPRESSION STORAGE AND ICE PATCHES ARE AVOIDED.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1519687
• Supplemental Notes:
  • Vol 40, No 2, PP 28-29, & 31, 3 FIG, 2 REF
• Authors:
  • Dale, J M
• Publication Date: 1970-2

Media Info

• Serial:
  • Better Roads
  • Publisher: James Informational Media, Incorporated
  • ISSN: 0006-0208
  • Serial URL: http://www.betterroads.com

Subject/Index Terms

• TRT Terms: Artificial aggregates; Asphalt concrete; Binders; Edge lines; Highway delineators; Organic compounds; Pavement grooving; Road markings; Thermoplastic materials; Visibility
• Old TRIS Terms: Delineators (Traffic); Synopal aggregate; Traffic marking
• Subject Areas: Geotechnology; Highways; Materials; Operations and Traffic Management;

Filing Info

• Accession Number: 00216968
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 3 1970 12:00AM