The existing asphaltic concrete (A.C.) surfacing and underlying clay material was pulverized, mixed with quick lime, and compacted to a depth of 0.83 feet in a project to improve the structural section and widen a section of State Highway 45. The operational sequence involved working in 3100 lineal feet sections, 12 feet wide. This required 3 loads of lime or 75 tons for each section. The 3 day work sequence (listed) consisted of : ripping the asphalt and breaking it down to approximately 4-inch diameter size; pulverizing the old A.C. so that 90 percent would pass the 1-1/2 inch screen; spread the lime; final mixing of the material, compacted, trimmed and final rolled. Thus a stable base material was produced. The surfacing received on application of CRS asphaltic emulsion applied at a rate of 0.2 gallon per square yard. A light sand coating was applied, as well as an asphalt concrete blanket. Performance was judged to be good. Comments are made on the use of lime, even quicklime in wintertime.

Media Info

  • Pagination: p. 50-52
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00149793
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Apr 13 1977 12:00AM