NUCLEAR ASPHALT CONTENT DETERMINATION AT THE JOB SITE AND DISCUSSION

QUICK ASPHALT CONTENT DETERMINATIONS IMMEDIATELY AFTER THE ASPHALT SURFACE COURSE HAS BEEN PLACED ARE NECESSARY FOR QUALITY CONTROL OF THE AMOUNT OF ASPHALT CEMENT IN THE HOT MIX. MODERN HOT PLANTS CAPABLE OF PRODUCING 200 TONS OR MORE PER HOUR TURN OUT SIGNIFICANT QUANTITIES OF ASPHALT CONCRETE BETWEEN THE TIME A SAMPLE TO BE TESTED FOR ASPHALT CONTENT IS OBTAINED AND THE TEST RESULTS ARE REPORTED. CORRELATION WITH THE REFLUX EXTRACTION TESTS AND PLANT CHECKS IS REPORTED IN THIS PAPER, AS WELL AS THE PROCEDURE INVOLVED WHEN USING THE NEUTRON PROBE. ASPHALTS USED WERE 85/100 AND 120/150 PENETRATION GRADE FROM THREE DIFFERENT SUPPLIERS. AGGREGATES USED CAME FROM SIX DIFFERENT SOURCES. PROJECTS ON WHICH THIS NEW METHOD WAS TRIED RANGED IN LOCATION OVER A 200-MILE AREA OF SOUTHEASTERN COLORADO. ALTHOUGH THIS NEW METHOD HAS NOT BEEN ADOPTED AS STANDARD PROCEDURE IN COLORADO, IT IS BEING USED AS A QUICK FIELD CHECK ON ASPHALT CONTENT IN CDH DISTRICT TWO WITH GOOD RESULTS. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1966/117/117-003.pdf
• Supplemental Notes:
  • 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:
  • Walters, H W
• Discussers:
  • Qureshi, Tajamal Hussain
  • Walters, H W
• Publication Date: 1966

Media Info

• Media Type: Digital/other
• Features: Figures; Tables;
• Pagination: pp 54-70
• Monograph Title: Bituminous materials, mixtures and pavements
• Serial:
  • Highway Research Record
  • Issue Number: 117
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt cement; Asphalt content; Bituminous materials; Chemical analysis; Correlation analysis; Fluxes; Hot mix asphalt; Neutrons; Nuclear tests; Pendulum tests; Quality control; Resource extraction; Surface treating; Testing
• Uncontrolled Terms: Extraction (Chemistry)
• Old TRIS Terms: Bituminous surfacing; Determination; Nuclear moisture-density determinations; Refluxing
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215807
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Nov 18 1994 12:00AM