Use of FWD, GPR and IP in Combination on Complex Pavement Projects - Including Case Studies

The pavement structure may include variable materials (type, thickness and condition). Conventional borehole investigation and pavement inspection may not be enough for more complex cases. The FWD/GPR/IP data combined with the results of borehole investigation, laboratory testing and pavement inspection provides powerful information about the existing pavement. It allows to explain the behaviour of the pavement and then to determine the necessary design. Often the pavement structures are placed on variable soils that undergo seasonal variation in moisture conditions. The evaluation of pavement condition and designing the most effective and at the same time reliable pavement rehabilitation can be a challenge. The conventional borehole investigation and pavement conditions visual inspection provide very important information but this may not be enough for more complex cases, particularly for pavement carrying heavy, variable traffic. Falling Weight Deflectometer (FWD), Ground Penetrating Radar (GPR) and pavement profilers have been used in pavement engineering for some time. This paper will describe the use of FWD, GPR and inertial or other types of profilers in combination on complex pavement projects. On some projects Grip Tester was also added to measure the frictional characteristics of the pavement. The authors of this paper have been doing pavement condition investigation and rehabilitation for years and on large number of projects and have concluded that on complex projects combing the data from all three devices and conventional investigation is critical to put the puzzle together. It allows to explain the behaviour of the pavement and then to design the optimum solution. This paper includes real life examples of the investigations on municipal and airport projects.

• Record URL:
  http://tac-atc.ca/sites/tac-atc.ca/files/conf_papers/uzarowski_0.pdf
• 
• Corporate Authors:

  Transportation Association of Canada (TAC)

  401-1111 Prince of Wales Drive
  Ottawa, Ontario  Canada 
• Authors:
  • Uzarowski, L
  • HENDERSON, V
  • RIZVI, R
  • MOHAMMAD, K
  • Lakkavalli, V
• Conference:
  • TAC 2016: Efficient Transportation - Managing the Demand - 2016 Conference and Exhibition of the Transportation Association of Canada
• Publication Date: 2016

Language

• English

Media Info

• Media Type: Web
• Pagination: 1 PDF file, 1.2 MB, 17p.
• Monograph Title: TAC 2016: Efficient Transportation - Managing the Demand - 2016 Conference and Exhibition of the Transportation Association of Canada

Subject/Index Terms

• TRT Terms: Case studies; Condition surveys; Conferences; Deflectographs; Flexible pavements; Ground penetrating radar; Inertia (Mechanics); Maintenance; Nondestructive tests; Planning; Profilometers
• Geographic Terms: Canada
• ITRD Terms: 8018: Canada; 8531: Case study; 3857: Condition survey; 8525: Conference; 6187: Deflectograph; 2944: Flexible pavement; 6118: Ground penetrating radar; 5491: Inertia; 3847: Maintenance; 6216: Non destructive testing; 143: Planning; 6103: Profilometer
• Subject Areas: Highways; Maintenance and Preservation; Planning and Forecasting; I22: Design of Pavements, Railways and Guideways; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01616351
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: ITRD, TAC
• Created Date: Nov 15 2016 4:52PM