THIN BONDED PORTLAND CEMENT CONCRETE OVERLAY

A three inch thick, bonded portland cement concrete (PCC) overlay and integral widening was used to rehabilitate a 4.5 mile section of Iowa route 141 from US 169 to Iowa 210 in Dallas County. There was a substantial amount of cracking in the old 20 foot wide PCC pavement. Most of the widening, which was tied to the original slab by dowel bars, was placed as a four foot wide section on one side. Coring has shown that the overlay is well bonded and testing with the Delamtect has shown less than 1% debonding. Midpanel transverse cracks in the old pavement have reflected through the overlay (as expected). Some new transverse cracking has occurred. This cracking has not caused any significant problems. In general, the overlay is performing quite well.

• Corporate Authors:

  Iowa Department of Transportation

  800 Lincoln Way
  Ames, IA  United States  50010
• Authors:
  • Marks, V J
• Publication Date: 1987-5

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 24 p.

Subject/Index Terms

• TRT Terms: Bonding; Overlays (Pavements); Portland cement concrete; Reflection cracking; Transverse cracking
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00472891
• Record Type: Publication
• Report/Paper Numbers: Iowa DOT HR-520,, Progress Report
• Contract Numbers: DOT-FH-71-83-3502-IA-11
• Files: TRIS, STATEDOT
• Created Date: Sep 30 1987 12:00AM