Sprayed Concrete Design and Execution

Thursday 9 December 2021
4:30pm - 5:30pm (UTC+10:00) Canberra, Melbourne, Sydney
Webinar
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 $33.00 CIA Member
 $22.00   Student Member
 $66.00  Non Member

 

Presenters

Fred Andrews-Phaedonos
Fred Andrews-Phaedonos is Principal Engineer- Concrete Technology at the Department of Transport. He is a Past President and Life Member of the Concrete Institute of Australia. Fred is also past Chairman of the Australian Technical Infrastructure Committee (ATIC). He has worked for DoT (VicRoads) for over 40 years, mainly in the bridge and concrete related areas. He has been a technical specialist for many years in the areas of concrete technology, concrete durability, bridge construction, maintenance, and rehabilitation, precast, repair and protection and Lead Auditor in all aspects of construction.

Sprayed Concrete – The Department of Transport Perspective
This presentation will highlight the importance of sprayed concrete and its quality in the construction of major infrastructure assets and provide examples of various applications.  It will discuss various specification requirements, sprayed concrete processes, materials, and mix design, and further highlight the importance of the prequalification procedure and test panels, competency of personnel, sampling and testing and the significance of curing and surface finish in ensuring the long-term quality and durability of sprayed concrete.

Stefan Bernard - TSE
Dr Bernard has been chair of the AuSS since its inception in 1998. He has also chaired three international conferences on shotcrete that have been organised by the society, these being in Hobart 2000, Cairns, 2004, and Queenstown, 2010. Dr Bernard is the director of Technologies in Structural Engineering Pty Ltd, a firm based in western Sydney that specialises in research and consulting related to shotcrete and fibre reinforced concrete. 
He developed the ASTM C1550 round panel test in the late 1990s, and drove the development of the standard and implementation of round panel testing as part of QC for fibre reinforced shotcrete in Australia and other countries. He has participated in the development of methodologies for use of panel performance data in tunnel lining design, early age performance assessment, and numerous other aspects of shotcrete performance. This work has led to the publication of other 100 papers, including more than 30 journal papers.
Consulting work related to shotcrete has included advice on mix design and lining support design for mines and tunnels throughout Australia, and in other countries including India, China, Russia, Kazakhstan, Turkey, USA, Canada, Mongolia, Chile, Peru, and Sweden.

Design of Shotcrete Linings for Ground Support
Shotcrete is becoming more widely used for the stabilisation of rock and earth both above and below ground. Methods of designing shotcrete linings are numerous, and this presentation will review the most commonly used methods. The focus will be on the process of structural analysis, since section design is relatively simple for both mesh and fibre reinforced linings. Analytical, semi-analytical, numerical, and experimental methods of design will be examined.

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