Recent Advances in RCC Roadway Construction in the USA

Abstract

Roller Compacted Concrete (RCC) is a negative slump concrete that is placed by an asphalt paver and compacted with vibratory rollers similar to asphalt pavement construction.  RCC has long history of good performance on heavy duty pavement applications such as ports, container yards, and manufacturing plants, and recently is gaining market share on roadway applications. This paper will summarize a recent survey of uses of RCC, types of paving equipment and final surface through 2021 with a focus on 2017-2021 in the United States as well as provide a few case studies on recent projects.  The paper documents many of the benefits of using RCC on these types of projects such as speed of installation and traffic opening.  Recent advances in mix design with admixtures, aggregate selection, as well as utilization of trowelling for a more aesthetically pleasing finish are also documented.