Date: Tuesday, 17 November 2020
Location: Online, 1:00pm AEDT
Organiser: Austroads
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Flexible granular pavements protected by sprayed seal surfacings are the backbone of the Australian and New Zealand road networks. Road agencies in Australia and New Zealand have therefore been focused on producing quality, long-lasting sprayed seal surfacings. Such efforts include conducting research into bituminous binders as a key component of sprayed seals.
A landmark achievement in this area was the Austroads sprayed seal trial sites at Coober Pedy in South Australia and Cooma in New South Wales. These trials were established to evaluate the relative performance of seals constructed using various grades of binders, from their placement through to long-term service. This was a significant research investment made to ensure that the national specifications and test methods that are used for the procurement of sealing binders are contemporary and robust, and incorporate performance requirements to ensure that the bituminous binders that are being procured are of suitable quality and are not prone to premature ageing.
This webinar will present the outcomes of the Austroads research project which was conducted to monitor the performance of the trial sites up to about 8 years since construction. The project work includes comprehensive studies on the ageing properties of trial binders and their effects on the life of sprayed seal surfacings.
Presented by Young Choi, Steve Patrick and John Esnouf.
There will be question and answer opportunities at the end of the session.
Young Choi is a Senior Technology Leader at the Australian Road Research Board (ARRB). Over the past 15 years, Young has been contributing to numerous Austroads research projects on bituminous binders including the development of long-term ageing tests for sprayed seal binders, performance‑based specifications for binders, crumbed rubber binders and warm mix asphalt technologies. He has been involved in the preparation of over 25 published Austroads technical/research reports on these topics.
Steve Patrick is a Senior Technology Leader in ARRB’s Future Transport Infrastructure team, with a focus on bituminous surfacings. Steve holds a Master of Pavement Technology and has over 15 years of industry experience. At ARRB, Steve has been involved with research activities for sprayed sealing practices (design and application), bitumen sprayer calibration, field testing, and the preparation of guidelines and standards.
John Esnouf is the Principal Engineer Sprayed Seal Technology at DoT Victoria. He is currently the Chair of the Austroads - Bituminous Surfacings Technology Group (BSTG) and is the Project Manager for this project.