STEEL BELTED

The Texas Department of Transportation is continually restoring existing pavements to keep pace with rapid growth in Houston, whose metropolitan area is home to more than 3.8 million residents. Houston's primary targets for restoration to date include Interstate 610 (I-610), the inner loop constructed in 1969, and Beltway 8, the outer loop constructed in 1983. Traditionally, transportation agencies have selected asphalt overlays to restore rigid concrete pavements. However, life-cycle costing along with advances in paving techniques, equipment, and reinforcement have made concrete a viable rehabilitation alternative. Steel fibers were first used in Texas pavements in 1983 where an experimental 1,110-ft (335-m) thin concrete bonded overlay was placed along I-610 and monitored over a 6-month period. When the northern portion of Beltway 8 showed signs of deterioration, which included delamination and cracking, engineers again turned to the steel fiber reinforced bonded overlay concept. Steel fiber reinforced concrete (SFRC) was selected for the overlay project for several reasons. Previous success on the I-610 project indicated that smooth riding SFRC bonded overlays are rapidly constructible in the Houston environment. Reflective cracking was reduced by as much as 60%. Also, the reduction in distress and the associated increase in remaining life of the pavement were substantial. A sidebar highlights SFRC use in the United States.

  • Availability:
  • Supplemental Notes:
    • Page Range: pp 44-46, 48
  • Corporate Authors:

    Scranton Gillette Communications

    380 E Northwest Highway, Suite 200
    Des Planes, IL  United States  60016-2282
  • Authors:
    • Loper, J H
    • Henry, C P
  • Publication Date: 2000-2

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00789074
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 30 2000 12:00AM