Date: Monday, 8 April 2024
Location: Online, 1:00 – 2:00pm AEST
Organiser: Austroads
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Moisture damage in asphalt (also known as stripping) can significantly reduce the durability and strength of asphalt pavements, often resulting in expensive repairs. Hydrated lime is widely used in Australia to reduce the moisture susceptibility of asphalt mixes in service; however, potentially more sustainable additives (such as liquid anti-stripping agents) are also widely used internationally to reduce the risk of moisture damage in asphalt pavements.
Austroads has completed a project that investigated the use of alternative anti-stripping additives (other than hydrated lime) to reduce the moisture susceptibility of asphalt mixes in service.
An interim laboratory assessment protocol was developed to assess the effectiveness of different anti-stripping additives.
This webinar will present:
- important factors affecting the moisture susceptibility of asphalt mixes
- commonly used moisture susceptibility test methods
- the main benefits and disadvantages of using hydrated lime or liquid anti-stripping agents
- an interim Austroads laboratory assessment protocol to evaluate the effectiveness of different anti-stripping additives.
The webinar will be presented by Joe Grobler and Sean Dorahy.
There will be question and answer opportunities during the session.
Joe Grobler is a specialist pavement engineer and leader for the National Transport Research Organisation’s (NTRO) Smarter Construction and Maintenance portfolio. Joe is also the secretary for the Austroads Asphalt Research Technical Group. He has 20 years’ experience in pavement investigations, material investigations, mechanistic modelling, detailed design, material specifications, and construction support. Since joining NTRO (former ARRB) in 2016 as a lead research engineer, Joe has been involved with several strategically significant research projects focused on pavement and material technologies.
Sean Dorahy is the Pavement Manager (Asphalt Technology) at Transport for NSW with expertise in the areas of asphalt technology, flexible pavement investigation, design, and construction. Sean first joined TfNSW (the then RTA) in 2011 and has worked in various areas of the organisation including road construction delivery, road maintenance, pavement engineering and materials testing. He received his Bachelor of Civil Engineering (1st Class Honours) from the University of Wollongong and holds a Masters of Pavement Technology from the Centre for Pavement Engineering Education. He is currently an active member of both the Austroads Asphalt Research Technical Group as well as Standards Australia committees responsible for test methods in the areas of both asphalt and bituminous materials.
No charge but registration is essential. Can’t make the live session? Register and we’ll send you a link to the recording.