EVALUATION OF A NUCLEAR ASPHALT CONTENT GAUGE

THE TROXLER MODEL 2226 ASPHALT CONTENT GAUGE WAS EVALUATED IN THE LABORATORY AND TAKEN INTO THE FIELD WHERE ITS RESULTS WERE COMPARED TO CONVENTIONAL REFLUX VALUES. THE PRECISION AS EVALUATED IN THE LABORATORY WAS FOUND TO BE EXCELLENT, EQUIVALENT TO .02% ASPHALT CONTENT WITH A 45 SECOND COUNT. THE GAUGE DOES HAVE TO BE RECALIBRATED EACH TIME A DIFFERENT AGGREGATE IS USED AND AS A PRACTICAL MATTER SHOULD BE RECALIBRATED FOR EACH DIFFERENT MIX TYPE. SAMPLE PREPARATION IS IMPORTANT AND SAMPLES SHOULD BE AS UNIFORM AS POSSIBLE. THE ACCURACY APPEARS TO BE AS GOOD AS THAT TO THE REFLUX EXTRACTOR. A RECOMMENDATION FOR USING THE NUCLEAR GAUGE IS APPENDED. /AUTHOR/

• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/18780
• Corporate Authors:

  Virginia Department of Highways

  Richmond, VA  United States  23219

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Hughes, C S
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Accuracy; Asphalt content; Fluxes; Measuring instruments; Nuclear tests
• Old TRIS Terms: Nuclear testing; Refluxing
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215954
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jun 1 1971 12:00AM