MnROAD Examines Two-Lift PCC/PCC Slipform Paving

Better Roads – April 2011

By Tom Kuennen, Contributing Editor

Two-lift PCC/PCC paving will work in the United States, but practical issues will have to be worked out, say Derek Tompkins, associate director, Pavement Research Institute, University of Minnesota-Minneapolis; Mary Vancura, research associate, University of Minnesota; Shreenath Rao, senior engineer, Applied Research Associates, Champaign, Ill.; Lev Khazanovich, associate professor, Department of Civil Engineering, University of Minnesota; and Michael I. Darter, principal engineer, Applied Research Associates, in their paper, Construction of Sustainable Pavements: Two-Layer Concrete Pavements at the MnROAD Facility.

“Recent efforts under the Strategic Highway Research Program (SHRP 2) project R21, Composite Pavements, led to the design and construction of composite portland cement concrete pavement sections at the Minnesota road research facility,” the authors write. Part of the R21 work includes research into a composite pavement system featuring a thin portland cement concrete (PCC) layer immediately placed over another PCC layer.

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