FIELD EVALUATION OF THE GAMMA SCIENTIFIC MODEL 910B RETROREFLECTOMETER (ABRIDGMENT)

A retroreflectometer designed for use in the field was tested for performance, durability, and ease of operations under conditions of: temperature ranges of 0-38 degrees C (32-100 degrees F), low and high relative humidity, and both bright sunlight and cloudy lighting conditions. Measurements taken with it were compared with those done by D retroreflectometer used in the laboratory. Varying environmental conditions of lighting, temperature, and relative humidity found in Pennsylvania did not adversely affect the performance of the device. As a result, it will be used by the Pennsylvania DOT to measure the initial specific luminance values of sheeting materials for compliance with its specification for sheet-reflective materials and to determine when highway signs should be replaced.

Media Info

  • Media Type: Print
  • Features: Figures;
  • Pagination: pp 19-23
  • Monograph Title: Culvert corrosion, porous lane marking, membranes, polymer concrete, and reflectometer evaluations
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00302227
  • Record Type: Publication
  • ISBN: 0309029600
  • Files: TRIS, TRB
  • Created Date: Feb 27 1980 12:00AM