EVALUATION OF REFLECTIVE SHEETINGS

In 1976 a photometric evaluation of reflective sheetings was begun. Included in the study were 9 white and 10 yellow reflective sheetings. For each color, five 15-in. square aluminum-backed panels were prepared and placed on vertical racks on the sign shop roof in Wisconsin Rapids, Wisconsin. The panels were first put in place near the end of January 1977. From 1977 to 1982, semiannual photometric evaluations of the sheetings were performed with a photometer. From 1983 to 1987, annual reflectivity measurements were obtained with a retroreflectometer. The amount of cold cracking also was measured. All photometer and retroreflectometer tests were taken at a divergence angle of 0.2 deg and at incidence angles of -4 and +30 deg. In addition to the five panels for each color sheeting, each white sheeting had five panels prepared for the purpose of studying the effect of stone bruising on cold cracking. Artificial stone bruises were made on each of these panels (four bruises per panel, one bruise per quadrant) by means of a dull center punch. (The artificial bruise damaged the sheeting but not the aluminum.)

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1991/1316/1316-005.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=EVALUATION+OF+REFLECTIVE+SHEETINGS&author=A.+Sharma&publication_year=1991
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309051649
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1316, Visibility for Roadways, Airways, and Seaways 1991: Proceedings of a Conference, July 25-26, 1990, Washington, D.C. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Sharma, Ashwani K
• Conference:
  • Visibility for Roadways, Airways, and Seaways, Symposium, 1990, Washington, DC, USA
• Publication Date: 1991

Media Info

• Features: Tables;
• Pagination: p. 24-30
• Monograph Title: Visibility for roadways, airways, and seaways 1991: proceedings of a conference, July 25-26, 1990, Washington, D.C.
• Serial:
  • Transportation Research Record
  • Issue Number: 1316
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Cold weather; Cracking; Loss and damage; Photometry; Reflectivity; Reflectorized materials; Sheathing; Testing; Whites; Yellow
• Uncontrolled Terms: Cold cracking
• Old TRIS Terms: Reflective sheetings; Test results
• Subject Areas: Geotechnology; Highways; Materials; Operations and Traffic Management; I35: Miscellaneous Materials; I73: Traffic Control;

Filing Info

• Accession Number: 00621448
• Record Type: Publication
• ISBN: 0309051649
• Files: TRIS, TRB, ATRI
• Created Date: Apr 30 1992 12:00AM