EXAMPLES OF THE APPLICATION OF ACCELERATED ASPHALT AGING METHOD

This paper reports on an examination of the manufacture of recycled asphalt mixtures. The repeatability of the asphalt aging method applied during the manufacture of asphalt mixtures, and after laying, was also examined. Knowing this, the repeatability of asphalt aging that appears during the manufacturing of aggregate mixtures as well as the quickening of asphalt layer aging were determined. To examine the accelerated asphalt aging method of the aging phenomenon during manufacturing, tests using a hot thin layer rotation device (RTFOT), as well as mixing tests using a laboratory pugmilmixer, were performed. Moreover, to investigate the aging phenomenon observed after laying, the accelerated asphalt aging method was developed under the Strategic Highway Research Program, using a pressure aging vessel, known as PAV, and the observation of asphalt mixtures exposed in pure oxygen gas at a temperature of 60 degrees Celsius (OMT or oxygen aging accelerated test) were performed at the same time. The authors' findings show that the aging phenomenon observed during manufacturing as well as after laying differs in two to three aspects. Next, applying the described accelerated asphalt aging methods led to an examination of the relationship between the rejuvenator and the degree of aging of recycled asphalt. The findings show that the composition of the rejuvenator used in recycled asphalt plays an important role in delaying the aging of recycled asphalt mixtures. (a) For the covering entry of this conference, please see ITRD abstract no. E204151.

• Corporate Authors:

  ROAD ENGINEERING ASSOCIATION OF ASIA AND AUSTRALASIA (REAAA)

  46B, JALAN BOLA TAMPAR 13/14, SECTION 13
  SHAH ALAM,   Malaysia  40100
• Authors:
  • Takahashi, Masanori
  • NOMURA, K-I
• Publication Date: 2000

Language

• English

Media Info

• Pagination: 11 p.
• Serial:
  • ROAD ENGINEERING ASSOCIATION OF ASIA AND AUSTRALASIA (REAAA) CONFERENCE, 10TH, 2000, TOKYO, JAPAN
  • Publisher: ROAD ENGINEERING ASSOCIATION OF ASIA AND AUSTRALASIA (REAAA)

Subject/Index Terms

• TRT Terms: Aging (Materials); Bituminous mixtures; Building materials; Conferences; Maintenance; Pavements; Recycling; Test procedures
• Uncontrolled Terms: Accelerated
• ITRD Terms: 5292: Ageing; 4967: Bituminous mixture; 8525: Conference; 3847: Maintenance; 4555: Material (constr); 2955: Pavement; 9064: Quick; 4573: Recycling (mater); 6288: Test method
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00937167
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Feb 5 2003 12:00AM