MECHANISTIC EVALUATION OF FLY ASH ASPHALT CONCRETE MIXTURES

The objectives of this investigation were: 1) to study the effect of fly ash on the mechanical properties of asphalt mixtures; and 2) to evaluate the effect of using fly ash in mitigating pavement distress and improving performance of asphalt concrete pavement. Investigators studied four groups of specimens with various fly ash contents. Resilient modulus, creep, permanent deformation, and fatigue were determined at three different temperatures. Moisture damage tests were conducted. The VESYS model was used to predict pavement performance. Findings indicated that fly ash can be employed as a mineral filler to improve resilent modulus characteristics and stripping resistance. Adding fly ash did not significantly reduce field performance of asphalt concrete mix in relation to rut depth and serviceability index, but the amount of pavement surface cracking increased.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08991561
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • ALI, N
  • Chan, J S
  • Simms, S
  • BUSHMAN, R
  • Bergan, A T
• Publication Date: 1996-2

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 19-25
• Serial:
  • Journal of Materials in Civil Engineering
  • Volume: 8
  • Issue Number: 1
  • Publisher: American Society of Civil Engineers
  • ISSN: 0899-1561
  • EISSN: 1943-5533
  • Serial URL: http://ascelibrary.org/journal/jmcee7

Subject/Index Terms

• TRT Terms: Asphalt concrete; Cracking; Creep; Defects; Deformation; Evaluation; Fatigue (Physiological condition); Fly ash; Mechanical properties; Mineral fillers; Modulus of resilience; Pavement distress; Pavement performance; Pavements; Surfaces
• Uncontrolled Terms: Surface cracks
• Subject Areas: Highways; Materials; Pavements; I32: Concrete;

Filing Info

• Accession Number: 00719276
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 16 1996 12:00AM