Evaluation of Paving Fabrics for Isolation of Bituminous Cracking

New studies propose to upgrade thousands of County State Aid Highway (CSAH) miles from 7-ton to 9-ton to 10-ton routes. Bituminous pavements require major maintenance for both thermal and distress crack repairs. Structural or maintenance overlays often include intensive and expensive milling or reclaim operations to reduce the effects of existing cracking or crack sealants. Less expensive alternatives to isolate existing problems, retain strength and usability of existing roadways are needed. Paving fabric may: 1) Isolate overlay pavements from current cracking and moisture intrusion paths; 2) Allow retention of base and bituminous for route upgrades; and 3) Reduce the need for and impacts of future crack treatments. This report describes results to date over a three year period of testing spun glass paving fabric as a means of preserving existing bituminous pavements by isolating the effects of heavy crack sealants and reflective cracking. It describes test segments, photo documentation of pre-pave conditions, material used, installation with bituminous overlay projects, monitoring and evaluation, pre-and post-installation surface conditions for the contract report period (2 plus years), results of FWD strength comparisons and cost comparisons with mill and replace, and two years' electronic file photo documentation of cracking with/without pavement fabric between new/old bituminous.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 85p

Subject/Index Terms

Filing Info

  • Accession Number: 01104969
  • Record Type: Publication
  • Report/Paper Numbers: MC/RC 2008-02
  • Contract Numbers: (c) 88498
  • Created Date: Jul 23 2008 2:11PM