FAULTING OF PORTLAND CEMENT CONCRETE PAVEMENTS

This is the fifth and final report on this project. It has been found that faulting begins almost immediately after a pavement is open to traffic. To prevent or reduce the problem, it is necessary to eliminate as many of the factors as possible which lead to faulting. Of utmost importance is elimination of the major sources of transportable fines, i.e., erodible base, and untreated shoulder material. Lean concrete base (LCB) shows great potential for providing a non-erodible base. Some of the experimental shoulder treatments described herein may be effective, but need to be tried in conjunction with the improved base. Rapid removal of free water from under the slab is highly desirable and two types of drainage systems are described. Further research is still considered necessary. In an effort to accelerate findings, plans are under way to construct near full scale laboratory model studies. It is hoped that a faulted condition can be generated in as little as a month or two of repetitive loading. Should this be successful, it will then be possible to evaluate various design features in a similar time span.

• Supplemental Notes:
  • This report was prepared in cooperation with the U.S. Department of Transportation, Federal Highway Administration.
• Corporate Authors:

  California Department of Transportation

  Transportation Laboratory
  5900 Folsom Boulevard
  Sacramento, CA  United States  95819
• Authors:
  • Neal, B F
  • Woodstrom, J H
• Publication Date: 1977-7

Media Info

• Pagination: 73 p.

Subject/Index Terms

• TRT Terms: Accelerated tests; Drainage structures; Erosion control; Faults; Free water; Lean concrete; Portland cement concrete; Repeated loads; Road shoulders
• Old TRIS Terms: Drainage systems; Lean mix concrete
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00178766
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA-CA-TL5167-77-20Final Rpt., FCP 45J1-034
• Contract Numbers: D-3-32
• Files: TRIS, USDOT, STATEDOT
• Created Date: Sep 14 1978 12:00AM