ANALYSIS OF PAVEMENT STRUCTURES USING DYNAFLECT DEFLECTIONS

During the construction of a rigid pavement test road, a series of plate bearing tests were performed to evaluate subgrade support values. Laboratory and field tests were performed to determine moduli and other properties of the econocrete and high quality concrete paving materials. PCC and econocrete composite modulus values were transformed into an equivalent modulus. The dynaflect testing device was used to measure deflection basins at different locations within each section of the completed pavement. Elastic and liquid subgrade stiffnesses, consistent with the measured deflected basins, were determined using continuous models developed by Hogg and by Westergaard, respectively. These implied stiffnesses were used to identify an appropriate way to interpret the plate bearing tests performed on each test section. Plate bearing stiffness values were interpreted from the test data so that they would be compatible to the liquid subgrade stiffness values needed as input into a finite element pavement model. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/8251904803
• Supplemental Notes:
  • Proceedings of the International Symposium on Bearing Capacity of Roads and Airfields, Volume 2, Trondheim, June 23-25, 1982.
• Corporate Authors:

  Tapir

  Trondheim University, Gloeshaugen
  Trondheim-NTH,   Norway 

  Tapir

  Trondheim University, Gloeshaugen
  Trondheim-NTH,   Norway 
• Authors:
  • Lybas, J
  • Ruth, B
• Conference:
  • Proceedings of the International Symposium on Bearing Capacity of Roads and Airfields, Volume 2, Trondheim, June 23-25, 1982.
• Publication Date: 1982

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 722-731

Subject/Index Terms

• TRT Terms: Bearing capacity; Calculation; Coefficient of subgrade reaction; Concrete; Conferences; Deflection; Dynaflect; Econocrete; Measurement; Modulus of elasticity; Pavement layers; Plate bearing test; Rigid pavements; Stiffness; Structural analysis; Subgrade (Pavements)
• Uncontrolled Terms: Pavement structure
• Old TRIS Terms: Dynaflect deflections; Soil support value
• ITRD Terms: 6464: Calculation; 5787: Coefficient of subgrade reaction; 4755: Concrete; 8525: Conference; 5586: Deflection; 6136: Measurement; 5919: Modulus of elasticity; 6279: Plate bearing test; 2964: Rigid pavement; 5931: Stiffness; 2950: Subgrade
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00376479
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• ISBN: 82-519-0480-3
• Report/Paper Numbers: Proceeding
• Files: ITRD, TRIS
• Created Date: Aug 30 1983 12:00AM