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Time resolved analysis of water drainage in porous asphalt concrete using neutron radiography

Authors
Publisher
Elsevier Ltd
Volume
77
Identifiers
DOI: 10.1016/j.apradiso.2013.01.040
Keywords
  • Porous Asphalt Concrete
  • Liquid Drainage
  • Pore Distribution
  • Neutron Radiography
  • X-Ray Tomography
  • Spallation Neutron Source
Disciplines
  • Mathematics

Abstract

Abstract Porous asphalt as a road surface layer controls aquaplaning as rain water can drain through its highly porous structure. The process of water drainage through this permeable layer is studied using neutron radiography. Time-resolved water configuration and distribution within the porous structure are reported. It is shown that radiography depicts the process of liquid water transport within the complex geometry of porous asphalt, capturing water films, filled dead end pores and water islands.

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