EFFECT OF CRACKING ON SURFACE DEFLECTIONS . THIRD INTERNATIONAL CONFERENCE ON BEARING CAPACITY OF ROADS AND AIRFIELDS. PROCEEDINGS, NORWEGIAN INSTITUTE OF TECHNOLOGY, TRONDHEIM, NORWAY, JULY 3-5 1990. VOLUMES 1-2

The effect of cracking on surface deflections has been investigated by laboratory experiments, mechanistic modeling and field study. Cracks have been modeled in both 2 dimensional- and 3 dimensional-finite element programs by bands with reduced stiffnesses. The laboratory experiments consisted of cyclic loading tests of asphalt beams on rubber foundations. The test and finite element modeling (FEM) results provided relationships between aggregate interlock, crack band stiffnesses and deflections. Similar FEM analyses on pavement models have been conducted to determine the effect of crack spacing and aggregate interlock on surface deflections as measured by falling weight deflectometers (FWD). Evaluation of the modeling shows that the 3D-models outpredict the 2D-models in accuracy. Both computer analyses and field study have revealed that the blunt crack band concept can be used for in-service pavements, but that only the aggregate interlock of moderate or severe cracks can be assessed reliably. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/8251910331
• Corporate Authors:

  Tapir

  Trondheim University, Gloeshaugen
  Trondheim-NTH,   Norway 
• Authors:
  • Van GURP, CPM
  • DE BONDT, A H
• Publication Date: 1990

Language

• English

Media Info

• Features: References;
• Pagination: p. 487-496
• Serial:
  • Publication of: Tapir Publishers
  • Publisher: Tapir

Subject/Index Terms

• TRT Terms: Accuracy; Bearing capacity; Conferences; Deflection; Finite element method; Mathematical models; Pavement cracking; Pavements
• Uncontrolled Terms: Models
• Old TRIS Terms: Pavement deflection
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00612283
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 82-519-1033-1
• Files: ITRD, TRIS
• Created Date: Aug 31 1991 12:00AM