NUCLEAR TEST EQUIPMENT INVESTIGATION, ASPHALT CONTENT GAUGE, PART IV

THE PERFORMANCE OF THE TROXLER AC-200 NUCLEAR ASPHALT CONTENT GAGE WAS EVALUATED DURING THE 1967-68 CONSTRUCTION SEASON. THE INVESTIGATION COVERED CALIBRATION PROCEDURES, ACCURACY AND PRECISION OF THE GAGE, AND TESTING IN THE FIELD, AND THE RESULTS WERE COMPARED TO STANDARD EXTRACTION TESTS. WITH ACCURATE CALIBRATION FOR EACH PROJECT, THE GAGE PRODUCED AVERAGE ASPHALT CONTENTS THAT WERE WITHIN PLUS OR MINUS 0.2% OF THE EXTRACTION TEST 95% OF THE TIME. THE 3 MINUTE SAMPLE COUNTS, AS RECOMMENDED BY THE MANUFACTURER, INDICATED A HIGH TESTING ERROR. A SIX MINUTE SAMPLE COUNT FOLLOWED BY A STANDARD COUNT IS CONSIDERED NECESSARY. /AUTHOR/

• Supplemental Notes:
  • HRP STUDY 64-5
• Corporate Authors:

  Nebraska Department of Roads

  Materials and Tests Division, P.O. Box 94759
  Lincoln, NE  United States  68509
• Authors:
  • Silenieks, J
  • Inghram, D
• Publication Date: 1972-4

Media Info

• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Accuracy; Asphalt content; Measuring instruments; Nuclear gauges
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215983
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Files: TRIS, USDOT, STATEDOT
• Created Date: Apr 30 1973 12:00AM