RESEARCH RESULTS FROM REHABILITATED AASHO ROAD TEST BASE STUDY

A special study of stabilized and unstabilized granular material as base for flexible and rigid pavements was included in the rehabilitation of AASHO Road Test pavement sections located near Ottawa, Illinois. The rehabilitation was completed and the pavement opened to regular traffic as part of Interstate Route 80 in 1962. The design and construction of the special base test sections and their behavior after 12 years of service under regular highway traffic loadings are discussed. The base materials included a bituminous-aggregate mixture (BAM), a cement- aggregate mixture (CAM), crushed stone and gravel. In the flexible pavement base study, the BAM base has performed best, with the loss in serviceability being the least. Rutting was the greatest in the crushed stone base section and least in the CAM. Transverse cracking was greatest in the CAM and least in the crushed stone base. Structural distress was greatest in the crushed stone and least in the BAM. In the rigid pavement base study, the stabilized bases were effective in reducing transverse cracking of the PCC pavement in 100-ft long panels and in reducing spalling and faulting at contraction joints. Panel cracking was least for BAM and greatest for the gravel base. Joint opening in the winter was wider but much more uniform for the sections containing stabilized base.

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 22-26
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00138805
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 16 1976 12:00AM