Use of chat-asphalt as a paving material: field performance assessment

Field performance evaluation of a chat-asphalt test road is pursued through non-destructive testing, field inspection, and survey. Chat refers to mine tailings from the Tar Creek Superfund Site in Oklahoma, Kansas, and Missouri. A 960.1-m long test road was constructed near Cardin, Oklahoma using 80% raw chat in surface course and 50% raw chat in base course (both by weight of aggregate). Three non-destructive field tests, namely spectral analysis of surface waves (SASW), the falling weight deflectometer (FWD), and the ground penetrating radar (GPR) were conducted once, immediately after construction and again after over two and a half years of service. The average FWD moduli of the surface and base layers were in the range of 841 to 1,751 MPa, which are lower than the traditional hot mix asphalt (HMA) moduli of 2,757.2 to 3,446.5 MPa. The combined back-calculated FWD modulus of surface and base chat-asphalt was found to be 1,379 MPa after construction, which increased significantly after over two and a half years. The results show that the SASW moduli are approximately five times higher than the corresponding FWD moduli. The HMA layer thicknesses obtained from the GPR match closely with the design thicknesses. The distress surveys showed a relatively low level of rutting and a fairly high level of smoothness. Overall, chat-asphalt is found to be a good paving material in this case study

• Record URL:
  http://ijprt.org.tw/files/sample/V4N2_71-79.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19966814
• Supplemental Notes:
  • Abstract used with permission of the publisher
• Authors:
  • Wasiuddin, Nazimuddin M
  • Zaman, Musharraf M
  • Tarefder, Rafiqul A
• Publication Date: 2011-3

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 71-79
• Serial:
  • International Journal of Pavement Research and Technology
  • Volume: 4
  • Issue Number: 2
  • Publisher: Chinese Society of Pavement Engineering
  • ISSN: 1996-6814
  • EISSN: 1997-1400
  • Serial URL: http://www.ijprt.org.tw/index.php
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Asphalt; Falling weight deflectometers; Field tests; Ground penetrating radar; Inspection; Mines and mineral products; Modulus; Nondestructive tests; Pavement distress; Paving materials; Roads; Rutting; Smoothness; Spectrum analysis; Surveying; Tailings
• Subject Areas: Highways; Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01345188
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 20 2011 7:27AM