DEBATE ON ROAD WATERPROOFING

This article discusses road waterproofing as an alternative to draining water out of pavements through a permeable base or from edge drains. Only recently has waterproofing been raised as a potential benefit of paving fabrics. To apply a fabric system, an existing asphalt pavement typically is first milled to remove cracks. A leveling course of hot mix asphalt (HMA) is then applied, followed by a spray of hot asphalt cement tack coat onto the surface. A non-woven fabric is laid into the tack coat, and an HMA overlay is placed on top of the fabric. This process forms a waterproofing membrane and a stress absorption layer. However, the use of paving fabrics is being called into question by many pavement designers, contractors, and other authorities. This article explores varying aspects of this debate and provides additional insight into the benefits and disadvantages of using paving fabrics to waterproof roads.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00791346
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Apr 5 2000 12:00AM