Anti-icing Study at O

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Anti-icing Study at OHare International
AirportProfessor Barry J. DempseyGraduate
Asst. Nathan M. Carroll
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BRIEF HISTORY

• Winter of 2002, phase I testing began on textured
  aggregate coatings.
• These Anti-icing Smart Pavement Overlays were
  evaluated for durability.
• Preliminary observations demonstrate feasibility
  of installation process and durability.
• Phase II began with installation of observation
  bed at OHare.

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THE THEORY

• The pavement overlay is placed on an existing
  pavement surface.
• Anti-icing chemical is applied prior to icing
  conditions.
• Icing conditions occur.
• Anti-icing chemical are released from pavement.
• Ice melts.

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OUR GOAL

• To perform a comprehensive observation of the
  test pavement under controlled conditions.
• To perform complete analysis of all recovered
  data to determine the durability, performance and
  surface friction characteristics of the
  anti-icing pavement.

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OBSERVATIONS

• Visual Conditions
• Weather Conditions
• Surface Temperature
• Operations Maintenance

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Visual

• On-sight observation of entire test bed.
• Photographic documentation.
• Real time video feed of taxiway (24/7).

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Weather Conditions

• Daily climatic data collected from NOAA.
• Climatic data utilized in the Enhanced Climatic
  Model (ECM).
• Surface temperatures monitored with existing
  sensors.

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Operations and Maintenance

• Use of observational video to determine all
  activities that occur on the pavement along with
  quantity and duration of activities.
• Documentation of O Ms daily log of activities
  for correlation with video observation.

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Equipment De-icer and Brushes
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INITIAL ACTIVITES

• Camera system installed and fully operational by
  end of October
• Run friction tests to establish baseline for
  anti-icing pavement and control.
• Take core samples from test site

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TIMELINE

• November 1, 2004
• Begin complete observations of test pavement
• January 1, 2005
• Submit interim report on findings
• April 1, 2005
• Begin intense analysis of all accumulated data
• August 2005
• Submit Final Report

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Thank YouAny Questions?