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...
Getting the Most from Roadway Investments
Roadways & pavements play a vital, but underappreciated role in our nation’s economic competitiveness. Implementation of two policies can improve the pavement network investment efficiency; Introduce more competition into the pavement bidding process Use “Remaining Service Interval” concept to allocate resources effectively at the pavement network level Together, these policies...
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...
The Case For Lower Strength Gain and Early Age Acceptance of Concrete for Road Pavements
The objective of this paper is to encourage informed discussion among concrete pavement engineers. In New South Wales there is a substantial length of contemporary concrete highway construction. A very large inventory of concrete strength results is available. These have shown that construction specification requirements are being significantly exceeded in...
Intricacies Surrounding the Machine Placement of Concrete Pavements in Tunnels: Current state of Practice.
Transport tunnels built in Australia within the past 25 years have typically been designed and constructed consecutively. However, in recent years Australia (and Sydney in particular) is witnessing these projects being delivered concurrently, which are in turn diluting the skills pool across all facets of the industry. Sydney is currently...
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...
Active Crack Control in CRC Pavement – Trials undertaken on the Kempsey Bypass Project; and Update with Respect to Overseas Practice
Presentation overview About the authors Why attempt active crack control? An introduction to the trials Our observations Our recommendations Overseas developments Acknowledgements
Forum Program – March 20 2017 ASCP Forum
M1 upgrade Hume Highway Alliances innovations Joint sealing performance update Tyre/road noise Concrete real time thermal measures International activities ASCP 10th Annual General Meeting
Innovations Hume Highway Alliance projects
Presentation by Rick Koschel and Jonathan Tasker (RMS) on innovations and outcomes from Hume Highway Alliance projects. Hume Highway Alliance projects include: Northern Hume Alliance Tarcutta Hume Alliance Hume Highway Southern Alliance Hume Highway Woomargama Alliance Innovations/trials: Longitudinal timing Wet on wet paving No-fines concrete pavement layer (porous concrete) Full...
Placing, finishing, curing, and jointing concrete pavement
The basic and fundamental principles that are required to make concrete pavements are discussed, including presentation of common equipment and methods.
Making good concrete
Three basics in making good concrete are discussed. Good concrete must have: Right materials Right proportions Thoroughly mixed