Comparison of Moisture Damage in Hot Mix Asphalt using Ultrasonic Accelerated Moisture Conditioning and Tensile Strength Test Results

Ultrasonic accelerated moisture conditioning (UAMC) has been demonstrated to be a quantitative analysis to evaluate the moisture sensitivity of a hot mix asphalt (HMA) mixture. Data from the UAMC test procedure was evaluated for repeatability and statistically compared to tensile strength test results after one and multiple cycles of freeze-thaw conditioning. UAMC is accomplished by containing a loose sample of HMA on a sieve in a 60 degree centigrade waterbath while subjecting the sample to ultrasonic energy. As the asphalt recedes from the surface of the aggregate, small particles of the mix are released and dropped through the sieve. The percent of material lost from the sample is recorded for five hours and plotted with respect to conditioning time. The slope of a linear regression function that is fit to the data represents the rate at which the small particles are released as the asphalt recedes along the surface of the aggregate. The value of the slope has been demonstrated to be a quantifiable representation of the moisture sensitivity for a HMA mixture, and the greater the value the more susceptible the mixture is to moisture damage. Seven mixes were subjected to UAMC. Replicate samples were used to define the UAMC slope of the linear regression function and evaluate the repeatability of the UAMC one-day test procedure. Repeatability was confined in six of the seven mixes, and the average UAMC slope for all mixes had a significant relationship to tensile strength test results after one and multiple cycles of freeze-thaw conditioning.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784408386
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • McCann, Martin
  • Anderson-Sprecher, Richard
  • Thomas, Kenneth P
  • Huang, Shin-Che
• Conference:
  • Airfield and Highway Pavements. The 2006 Airfield and Highway Pavement Specialty Conference
  • Location: Atlanta GA, United States
  • Date: 2006-4-30 to 2006-5-3
• Publication Date: 2006

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 601-613
• Monograph Title: Airfield and Highway Pavements: Meeting Today’s Challenges with Emerging Technologies

Subject/Index Terms

• TRT Terms: Freeze thaw durability; Freeze thaw tests; Hot mix asphalt; Service life; Tensile strength; Ultrasonic tests
• Uncontrolled Terms: Moisture sensitivity
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01037790
• Record Type: Publication
• ISBN: 0784408386
• Files: TRIS
• Created Date: Dec 1 2006 8:10AM