CRCP Roundabouts – A Theoretical Case Study

Paper and Presentation by Tim Buckingham-Jones from ASCP 4th Concrete Pavements Conference 2017

The use of concrete roundabouts in NSW, in recent times, is generally limited to a steel fibre reinforced concrete pavement (SFCP). The higher flexural strength and ‘toughness’ being beneficial in areas where conventional slab geometric limits often need to be exceeded due
to the complex geometry. An alternative to SFCP is the use of Continuously Reinforced Concrete Pavement (CRCP) in roundabout applications. This approach has found acceptance in Europe, namely in Belgium and the Netherlands, and in more recent years the United States.
On a 2014 ASCP visit to Belgium a number of CRCP installations, including two roundabouts, were inspected. Whilst only a brief visit, the roundabout installations were performing well, and demonstrated that there is potential application for this technology in Australia.

This paper presents a theoretical case study of the design of a CRCP roundabout in Australia. The purpose is to clarify the potential opportunities and raise issues that may present barriers to implementation. The paper will provide the industry an opportunity to assess in further detail a CRCP roundabout pavement design.

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