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Evaluation of Transverse Joint Forming Methods in PCC Pavement (TR-532)

Dowels on top of gravel base

Typical cross-section of metal angles placed over dowels


Principal investigators:

Student researchers:

Project status


Start date: 03/01/05
End date: 02/28/06


Report: Evaluation of Transverse Joint Forming Methods in PCC Pavement (TR-532) (3.9 mb pdf) January 2006

Tech transfer summary: Feasibility of Forming Transverse Joints with Joint Forming Devices ( pdf) Jan 2006


Sponsor(s): Iowa Department of Transportation

About the research

Abstract: The members of the Iowa Concrete Paving Association, the National Concrete Pavement Technology Center Research Committee, and the Iowa Highway Research Board commissioned a study to examine alternative ways of developing transverse joints in portland cement concrete pavements. The present study investigated six separate variations of vertical metal strips placed above and below the dowels in conventional baskets. In addition, the study investigated existing patented assemblies and a new assembly developed in Spain and used in Australia. The metal assemblies were placed in a new pavement and allowed to stay in place for 30 days before the Iowa Department of Transportation staff terminated the test by directing the contractor to saw and seal the joints. This report describes the design, construction, testing, and conclusions of the project.