STRUCTURAL EVALUATION OF CRACK AND SEAT OVERLAY PAVEMENTS (WITH DISCUSSION)

This workshop presentation briefly discusses the structural evaluation of pavements consisting of Hot Mix Asphalt (HMA) overlays on cracked and seated concrete pavements. Cracking and seating reduces reflection cracking in the overlay course. The study was conducted to develop structural layer coefficients for the cracked and seated layers. The structural layer coefficients were calculated from dynamic deflection test results and ranged from 0.21 to 0.50. The crack spacing and degree of cracking appeared to be related to the layer coefficient which increases as the crack spacing increases. The structural layer coefficients also showed a tendency to increase after the HMA overlay was placed.

• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Lukanen, E O
  • Skok, E L
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1987

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 720-731
• Serial:
  • Volume: 56

Subject/Index Terms

• TRT Terms: Crack and seat treatment; Cracking; Deflection tests; Hot mix asphalt; Layer coefficient (Pavements); Overlays (Pavements); Prevention; Reflection cracking; Spacing; Structural analysis
• Uncontrolled Terms: Crack spacing
• Old TRIS Terms: Layer coefficients
• Subject Areas: Design; Highways; Pavements; Security and Emergencies; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00739816
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 29 1997 12:00AM