USE OF FIBROUS CONCRETE FOR PAVEMENT OVERLAYS

A project is reported which was designed to determine the feasibility of batching, mixing, transporting and finishing fiber- reinforced concrete with conventional paving equipment, and to determine the relative performance of the experimental overlay in comparison to adjacent conventional overlay. Details are given of the mix proportions, the base preparation, and the spreading of the fibrous concrete. Although the struck surface of the freshly poured concrete appeared satisfactory, the balls were causing a problem in finishing. Tests indicated that the air content averaged 6 percent and the slump averaged 2 inches. Concrete saws cut a longitudinal joint in the center of each 24 foot wide pavement and the transverse joints. This project was paved in 2 separate days because traffic had to be maintained on these heavily used highways. A major advantage of the fibrous concrete is its early strength. Inspections were made prior to installation, and the type and location of deterioration in the existing slab was recorded. The results of subsequent surveys showed very few additional cracks spills or other defects.

• Corporate Authors:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Bellner, B T
• Publication Date: 1976-4

Media Info

• Features: Photos; Tables;
• Pagination: p. 69-78
• Serial:
  • Highway Focus
  • Volume: 8
  • Issue Number: 2

Subject/Index Terms

• TRT Terms: Air content; Fiber reinforced concrete; Overlays (Pavements); Pavement cracking; Pavement performance; Pavers; Paving
• Subject Areas: Construction; Highways; Materials;

Filing Info

• Accession Number: 00149796
• Record Type: Publication
• Files: TRIS, USDOT
• Created Date: Apr 13 1977 12:00AM