DETECTION OF VOIDS UNDER CONTRETE PAVEMENTS USING DEFLECTION TESTING--KANSAS EXPERIENCE

Pumping of fines from the foundation layer is a major cause of loss of support beneath Jointed Plain Concrete Pavement (JPCP). The loss of support causes large deflections and slab stresses, which in turn, lead to faulting of joints, corner breaks/diagonal cracks, and finally complete break-up of slabs. This paper describes the experience of the Kansas Department of Transportation (KDOT) wtih undersealing of concrete pavements. Dynaflect deflection tests have been used in two projects for void detection as well as for assessment of effectiveness, while Falling Weight Deflectometer (FWD) tests have been used on one project in 1992.

• Corporate Authors:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Authors:
  • Hossain, M
  • Gisi, Andrew J
• 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. 1703-1718
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Assessments; Concrete pavements; Deflection tests; Detection and identification; Detectors; Falling weight deflectometers; Fines (Materials); Foundations; Sealing (Technology); Slabs; Stresses; Undersealing; Void ratios
• Uncontrolled Terms: Voids
• Geographic Terms: Kansas
• Subject Areas: Design; Finance; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00740293
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Dec 17 1997 12:00AM