Effect of Deicing and Anti-Icing Chemicals on HMA Airfield Runways

The purpose of Airfield Asphalt Pavement Technology Program (AAPTP) Project 5-3 was to investigate the performance of hot-mix asphalt (HMA) airfield pavements subjected to deicing and anti-icing chemicals (DIAIC). The most commonly used DIAICs include potassium acetate, sodium acetate, urea, and ethylene and propylene glycol. Recently, several Nordic countries have reported what appears to be damage in HMA pavements related to the use of DIAICs. The exact mechanism of this damage is not clear, although it appears to be a form of moisture damage accelerated by the low surface tension and relatively high density of many DIAIC solutions. DIAIC-related damage does not appear to be common in airfield pavements in the U.S. and Canada. If it is suspected that an HMA mixture is susceptible to DIAIC-related damage, a simple procedure called the immersion tension test can be used to perform an evaluation. In cases where DIAIC-related damage is a problem, mixture performance can be improved by using a stiffer binder and/or by incorporating hydrated lime into the mixture. When an HMA mixture prone to DIAIC-related damage is used in an airfield pavement, it is essential to thoroughly compact the pavement to reduce the air voids to the lower end of the specified range.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References;
  • Pagination: 16p
  • Monograph Title: 2010 FAA Worldwide Airport Technology Transfer Conference: Next Generation of Airport Technology

Subject/Index Terms

Filing Info

  • Accession Number: 01608503
  • Record Type: Publication
  • Files: TRIS, ATRI, USDOT
  • Created Date: Aug 15 2016 11:29AM