National Airport Pavement Test Facility Construction Cycle 9 — Volume 3, Geosynthetic Test

Details

• Creators:
  Kazmee, Hasan ; Murrell, Scott ; Ricalde, Lia ; Parsons, Timothy (Tim) ; Duah, Ebenezer ; Brill, David R ; Offenbacker, Daniel
• Corporate Creators:
  United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Airport Pavement Research and Development Section ; ARA, Incorporated
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration. Airport Engineering Division
• Subject/TRT Terms:
  Airports Construction Cycle 9 (CC9) Geogrids Geosynthetics National Airport Pavement Test Facility, (NAPTF) Pavement Tests Test Facilities
• Publication/ Report Number:
  DOT/FAA/TC-26/15
• DOI:
  https://doi.org/10.21949/jh5t-zz67
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Contracting Officer:
  Flynn, Murphy
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center
• Abstract:
  Construction Cycle 9 (CC9) was the ninth in a series of full-scale airport pavement tests performed at the Federal Aviation Administration (FAA) National Airport Pavement Test Facility, the fifth involving flexible pavements. It contained four test areas: fatigue, geosynthetics, cement-treated permeable base, and overload. This report addresses the geosynthetics test area, which consisted of two test items: LFC-3N with a geotextile separation fabric between the subgrade and subbase plus a Class B geogrid at the subbase/base interface, and LFC-3S with just the geotextile. These test items were subjected to simulated full-scale aircraft trafficking along with a control test item (LFC-4S) with similar materials and thickness but not containing geosynthetics. The goal of this test was to quantify any improvement in performance of the geosynthetic test items when compared to the control test item. Data were collected through laboratory and in situ testing, visual evaluation, and embedded pavement sensors. Researchers analyzed the effect of construction practices on pavement performance and compared pavement responses in all structural layers, in particular examining how the accumulation of permanent deformation is affected by the presence or absence of geogrid reinforcement and geotextile separation fabric. All three test items experienced structural failure before the end of traffic. Test items with geosynthetic elements had greater surface upheaval, rutting, and crack density than the control section; however, this was attributed to improper compaction of the sublayers during construction. The embedded sensors indicated that the geogrid increased the resistance to permanent deformation in the granular subbase layer. Despite accumulating higher surface rutting (attributed to the underlying compaction issues), the geogrid-reinforced test item LFC-3N exhibited lower upheaval than the other test items when trafficked beyond the pass where the failure criterion was met (1-in. dilative heave). The inclusion of geogrid aided in lateral confinement and resulted in lower permanent deformation in the subbase layer of LFC-3N than in the subbase layers of the LFC-3S and LFC-4S.
• Format:
  PDF
• Funding:
  692M15-20-D-00004
• Collection(s):
  FAA William J. Hughes Technical Center for Advanced Aerospace
• Main Document Checksum:
  urn:sha-512:491108cf561da1edfcc701ebd411341f4c1952a0f5823178dc1eaaff5ed42a041de8dd024d980cd0365e651a24edd81c73fa5aaa55f0a9e8ca56643038448cb1
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89588/dot_89588_DS1.pdf
• File Type:
  [PDF - 14.65 MB ]