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Iowa State University--Becoming the Best

Ultrathin Portland Cement Concrete Overlay Extended Evaluation (TR-432)


Principal investigators:

Project status


Start date: 07/01/99
End date: 12/31/04


Tech transfer summary: Ultra-Thin PCC Overlays ( pdf) Jan 2005


Sponsor(s): Iowa Department of Transportation

About the research

Abstract: This research will seek to extend the evaluation of a 7.2-mile ultrathin portland cement concrete pavement from five years to ten years. In addition, it will allow the researchers to explore the potential ways to rehabilitate thin concrete pavements and understand their behavior under climate and loadings. It will also allow the researchers to better estimate the life of an ultrathin overlay rehabilitation. Some 41 test sections of asphalt concrete and portland cement will be reviewed twice per year visually and once per year in terms of deflection measurements.