EMAS Cold Weather Performance Investigations

At some airports, Engineered Material Arresting Systems (EMAS) are used in runway safety areas at to provide a mechanism for decelerating aircraft in the event of a runway overrun. The main component of an EMAS is energy-absorbing cellular concrete material that is relatively delicate. A system of sealants, coatings, and outer layers protect the cellular concrete from environmental conditions such as weather and jet blast. A research study was conducted to ascertain an EMASs durability in cold climates where temperatures cycle between freezing and thawing. Four series of tests were performed, including (1) thermal cycling on a large-scale EMAS bed, (2) temperature and humidity cycling on 1-cubic-foot EMAS samples, (3) adhesion tests on EMAS sealant materials, and (4) durability tests on the materials that comprise the top protective layer of EMAS blocks. The large-scale EMAS bed was thermally cycled from -20 degrees F to room temperature for 20 cycles over a 9-month period. Qualitative condition assessments were performed during the cycling, and quantitative post-cycling punch tests were performed and compared to the pre-cycling punch tests.

  • Record URL:
  • Corporate Authors:

    Engineering Research and Development Center

    Hanover, NH  United States 

    Federal Aviation Administration

    800 Independence Avenue, SW
    Washington, DC  United States  20591
  • Authors:
    • Countermarsh, B A
  • Publication Date: 2009-9

Language

  • English

Media Info

  • Media Type: Print
  • Edition: Final Report
  • Pagination: 63p

Subject/Index Terms

Filing Info

  • Accession Number: 01150567
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Feb 9 2010 3:56PM