THE CURVATURE OF A DEFLECTION BOWL: A TOOL FOR THE ASSESSMENT OF REFLECTIVE CRACK POTENTIAL

This paper describes the value of the Surface Curvature Index (SCI) as a structural indicator in the design of flexible overlays on cracked road pavements. The SCI can easily be derived from falling weight deflection measurements and represents the difference between the center deflection and the deflection at a certain distance from the load. Based on fracture mechanics principles and finite element calculations, it is demonstrated that the SCI can be a useful parameter in the design of flexible overlays on cracked road pavements. The SCI can be used in evaluating pavement structures for reflective crack potential.

• Corporate Authors:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Authors:
  • Stet, M
  • Thewessen, B
• Conference:
  • 4th International Conference, Bearing Capacity of Roads and Airfields
  • Location: Minneapolis, MN
  • Date: 1994-8-17 to 1994-8-21
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1067-1072
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Assessments; Crack and seat treatment; Curvature; Design; Falling weight deflectometers; Finite element method; Flexibility; Fracture mechanics; Overlays (Pavements); Structures; Tools
• Uncontrolled Terms: Flexible
• Old TRIS Terms: Deflection bowl; Finite elements; Reflective crack potential; Structural; Surface curvature index
• Subject Areas: Bridges and other structures; Design; Finance; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00730106
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Dec 17 1997 12:00AM