Rigid pavement RFIs (request for information) and NCRs (nonconformance report) are an ongoing battle between contractors and designers. This is the frontline of construction phase services (CPS) and when not managed correctly, can lead to tension between contractors and designers, which can lead to breakdown of communications and affect construction...
Northern Connector – The paving journey for the first concrete pavement in Adelaide
During the Northern Connector tender, concrete pavements was discussed early as an option. Our concrete pavement solution became Lendlease’s primary submission with flexible pavement as an alternative as it provided increased local content and introduced new skills for the region. Following contract award, immediate planning for detailed jointing design, raw...
M1 Upgrade – Kariong To Somersby Project Lessons Learning
This presentation comprehensively reviews the Kariong to Somersby project. This project is one of three major M1 Upgrades with notable features including; Dual PCP, 33 years in service, 70 km north of Sydney, AADT over 60,000 and growing. Importantly, this is a capacity driven upgrade (widening not a rehabilitation). Key...
Low Noise Diamond Grinding Pacific Highway Trial
A Low Noise Diamond Grinding (LNDG) Trial was conducted across three sites on the Pacific Highway Upgrade, Nambucca Heads to Urunga section. This presentation outline the basics around LNDG, criteria for the trial, environmental considerations, analysis of results of the trial, summary of the outcomes, considerations and recommendations for future...
Use of glass fibre reinforced polymer bars in concrete pavements
The use of glass fibre reinforced polymer (GFRP) bars as an alternative to steel reinforcement has considerably increased over the past decade. Design-related information is now available and can be adapted into the Australian design and construction practice. The results of technological research and field implementation in concrete pavements carried...
Concrete Highway Pavement Load Capacity for Possible Future Increases in Permissible Axle Loads
From time to time there is discussion within Government and industry about measures to improve freight transport efficiency. These discussions often include increasing permissible axle loads. If this was to happen it may also be limited to major road transport corridors. This paper neither supports nor sets out a case...
Key Performance Requirements for Long Lasting Airport Concrete Pavements
This presentation by GOMACO takes wide ranging review of construction and whole-of-life review of the performance of airfield pavements, including: Actual Airport Facts and Trends Airport Design Advantages Various Adopted Paving Methodologies and Technical Features Key Performance Requirements for Long-Lasting Airport Concrete Pavements GOMACO’s Worldwide Airport References Conclusions
Overview of light rail track slab design
Recently Aurecon have developed the design on several urban light rail projects, with a notable example being that recently opened in Newcastle. With several projects currently in development and tender phases, and the likelihood of further stages of light rail expansion, it is important to understand the options available for...
A Fresh Look at Pavement Life Costs
Whole of life cycle costing of pavements has not been revisited for nearly 27 years since 1990 by the Bureau of Transport Economics (now BITRE). Previously, asphalt pavements were considered to have a lower cost of construction but required regular maintenance (every 5 to 10 years) whereas concrete pavements are...
The important role materials play in concrete pavement design, performance, and service life
The materials that make up concrete have a direct influence on the decisions made during pavement design and construction, as well as the performance of the pavement in service. What happens when material performance varies from what was considered at design stage? What if we need to change construction methods...
Influence of Ground Granulated Blast Furnace Slag (GGBFS) Cement in concrete pavement mix designs
Roads and Maritime Services (RMS) pavement specifications require the use of Grade 1 fly ash and Ground Granulated Blast Furnace slag cement (GGBFS) for R82 – lean mix concrete subbase [1], and also fly ash and/or GGBFS for R83 – Concrete Pavement Base [2], where reactive aggregates are used. This...
How Runway Pavement Value Choices are Influenced by Construction Costs, Loading, Subgrade and Operational Considerations
In Australia, most runway pavements are constructed from asphalt, however the reverse is markedly true for the USA. Melbourne’s Essendon runway was originally concrete but was overlaid with thick asphalt many years ago. Asphalt runways at Melbourne’s Tullamarine and Amberley have some sections of concrete. This paper explores the determination...