THE PERFORMANCE OF RCC PAVEMENTS IN AUSTRALIA

Abstract

This paper reviews the performance of roller compacted concrete (RCC) pavements in Australia, detailing the progression in design, detailing, and construction techniques from the late 1980s. It provides an in-depth analysis of several early Australian projects, examining their performance characteristics, including wear, cracking, structural failures, and more. The study reflects on construction and design methodologies, proposing improvements and highlighting the economic success and challenges of RCC pavements. The paper covers case histories from various projects such as Duncan Colliery Haul Road, Tea Tree Road, and Westgate Transport Company's container yard, among others. It discusses the issues encountered, such as construction faults, early structural failure, and the need for expansion joints and adequate anchorage. Recommendations for future projects include considering positional restraint, accounting for thermal expansion, and improving rideability through technological advancements in machinery and operator skill. The paper concludes that while RCC is not a "forgiving" material, requiring precise design and careful construction, the experience in Australia has been positive, with RCC pavements performing adequately and expected to find a niche as a viable, economic rigid pavement system. (Abstract generated by AI tool ChatGPT 4)