EFFECTS OF THE IGNITION METHOD ON AGGREGATE PROPERTIES

One of the primary quality control tests performed on hot mic asphalt concrete (HMAC) mixes is the determination of asphalt binder content. Many highway agencies, such as the Arkansas State Highway and Transportation Department (AHTD) pay paving contractors based on the accuracy of binder content in the mix placed. Therefore, it is very important to both the contractor and highway agency that the binder content determination be accurate as well as timely. The ignition method is a procedure for determining asphalt binder content that has many advantages. The ignition oven is a device that heats the asphalt mixture to a temperature that literally ignites the asphalt binder, leaving behind clean aggregate. The loss of weight during this process is monitored, and an asphalt content is calculated, After the test is performed, clean aggregate remains, which then can be tested for gradation accuracy. However, some concern has been expressed in the ignition oven (i.e. 538 C) on the aggregates in an asphalt concrete mix. This paper reports on research regarding the accuracy of reported asphalt contents and the condition of the resulting aggregate after being burned, as compared to its original condition.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Hall, K D
  • Williams, S G
• Conference:
  • Asphalt Paving Technology 1999
  • Location: Chicago, Illinois
  • Date: 1999-3-8 to 1999-3-10
• Publication Date: 1999

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 574-588
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 68
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt content; Binder content; Binders; Hot mix asphalt; Ignition; Solvents
• Geographic Terms: Arkansas
• Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00784135
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Feb 25 2000 12:00AM