Evaluation of Multilayered Complex Airfield Pavement with HFWD

Normally airfield pavements are made either flexible or rigid when constructed. Over a period of time, some rigid pavements are overlaid with asphaltic concrete because such overlays can be done very fast as compared to a rigid overlay and do not cause much traffic disruption. These pavements are put under the category of composite pavements. However, some airfield pavements in India, built during the Second World War era, were overlaid and strengthened to cater for heavier aircrafts using different layers of material. The materials used ranged from bricks laid flat, bricks on edge, lime concrete, asphaltic concrete, cement concrete etc. The behavior of such pavements varies from a case to case basis depending on the different layers constituting the pavement. The Pavement Classification Number (PCN) evaluation analysis of such pavements becomes complicated as the use of conventional methods and practices have certain limitations with respect to such complex structures. An attempt was made to solve the issue of the evaluation of such complex pavements using a Heavy Falling Weight Deflectometer (HFWD). A complex pavement structure at Secondary runway at NSCBI airport, Kolkata was selected and tested for its in-situ strength in the year 2003. This runway pavement had four different cross-sectional structures along the length of the runway. One section of the runway has seven layers (subgrade to surface course): brick flat soling, Lime Concrete, HMA, Cement Concrete, brick flat soling, brick on edge and HMA, thereby making the pavement structure very complex for analysis. Deflection data was collected using a HFWD and analyzed with various combinations of layers vis-à-vis individual layers considering their elastic properties to find out the most realistic PCN. Overlay with HMA was designed for this pavement for its strengthening and the results were quite encouraging.

• Record URL:
  http://www.airporttech.tc.faa.gov/Airport-R-D/Conference-and-Workshop/Airport-RD-Conference-Detail/dt/Detail/ItemID/384/Evaluation-of-Multilayered-Complex-Airfield-Pavement-with-HFWD
• Record URL:
  http://www.airtech.tc.faa.gov/naptf/att07/2007/Papers/P07011_Gupta_et_al.pdf
• 
• Corporate Authors:

  Federal Aviation Administration

  800 Independence Avenue, SW
  Washington, DC  United States  20591
• Authors:
  • Gupta, Pankaj
  • Chaudhari, G K
  • Chandwani, Sanjay
• Conference:
  • 2007 Worldwide Airport Technology Transfer Conference
  • Location: Atlantic City New Jersey, United States
  • Date: 2007-4-16 to 2007-4-18
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 16p
• Monograph Title: 2007 FAA Worldwide Airport Technology Transfer Conference: New Directions in Airport Technology

Subject/Index Terms

• TRT Terms: Airport runways; Composite pavements; Deflection; Elasticity (Mechanics); Falling weight deflectometers; Overlays (Pavements); Pavement layers
• Uncontrolled Terms: Pavement classification number
• Geographic Terms: Kolkata (India)
• Subject Areas: Aviation; Data and Information Technology; Pavements;

Filing Info

• Accession Number: 01617379
• Record Type: Publication
• Files: TRIS, ATRI, USDOT
• Created Date: Nov 21 2016 1:43PM