Rehabilitation of Water-Damaged Runway Composite Pavements

Composite pavement consisting of an asphalt mixture layer placed on continuously reinforced concrete slabs over subbase was constructed at the end of Runway A in Narita International Airport between the autumn of 2011 and spring of 2012. However, several months after it had been opened to traffic, some signs of distress appeared on the pavement surface. These included a dull sound when subjected to a hammer tapping test, white spots and black spots on the surface, stains at construction joints and flows of asphalt mixture around airport lights. Along with conducting tentative repairs, a permanent rehabilitation method has been studied. The causes of the above problems were studied in several different ways, including examination of the construction records, investigation of the site, laboratory tests, numerical analysis and literature survey. The causes can be classified into two kinds, namely, intrusion of water into asphalt mixtures and low stability of the asphalt mixtures. Based on these studies, rehabilitation work in which the existing asphalt mixture layers are removed and new asphalt mixture layers are placed with some special treatments for water drainage has been planned. A new asphalt mixture layer that is composed of two kinds of polymer modified asphalt layers is to be introduced. Two kinds of water drainage facilities are to be installed on concrete slabs surrounding the rehabilitation area to remove water from the asphalt mixtures.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 15p
  • Monograph Title: 2014 FAA Worldwide Airport Technology Transfer Conference Proceedings: Innovations in Airport Safety and Pavement Technology

Subject/Index Terms

Filing Info

  • Accession Number: 01538129
  • Record Type: Publication
  • Report/Paper Numbers: P10034
  • Files: TRIS, ATRI, USDOT
  • Created Date: Sep 9 2014 6:59AM