IOM3(HK) - Technical Seminar (Webinar) on Use of Fibre Reinforced Concrete (FRC) in Precast Segmental Tunnel Linings in Asia

Hong Kong Branch
,
13 Oct 2020

The Institute of Materials, Minerals and Mining (IOM3) Hong Kong Branch organised a technical seminar on 26 August 2020 with the topic “Use of Fibre Reinforced Concrete (FRC) in Precast Segmental Tunnel Linings in Asia”. The event proved very popular with over 100 attendees from elsewhere outside Hong Kong as well including UK, Belgium, Australia, Singapore, Malaysia, Philippine etc.
Due to the COVID-19, this seminar has been postponed from early this year to finally in late August, from organising it in a venue to finally through a webinar.  With full support by our guest speaker, Mr. Gan, this evening webinar was successfully and professionally delivered, which fully demonstrated that engineers are agile nowadays to adapt to the changes.
FRC has been used in precast segmental tunnel linings in Asia since 2005 beginning with Singapore in temporary segments. In 2012, the first permanent use of FRC in precast segmental tunnel linings finally began with Contract 933 in the Downtown Line Phase 3 in Singapore. Since then, FRC in precast segmental tunnel linings has been used for projects in Malaysia, Hong Kong, Japan and Singapore. The number of projects adopting FRC in precast segmental tunnel linings are growing.
At the beginning of the seminar, Mr Gan shared his past projects with the use of FRC in precast segments including MRT & DTSS in Singapore, Lian Tang Tunnel in Hong Kong and Cable Tunnel in Japan. He then discussed the quality assurance and quality control of manufacturing FRC segments by achieving certain performance requirements such as tensile splitting strength, flexural strength and residual flexural strengths.  His talk was followed by a technical sharing on how FRC segments shall be designed for compliance with relevant global standards such as FIB Model Code 2010 and Singapore Standard Design of Fibre Concrete Structures 2020.  He also shared some research and studies on the durability of FRC which is proven to have good crack control.  His talk was ended by an illustration of the PAL-XFEL Project in South Korea where the longest jointless slab using steel fibre only was constructed for about 1.1km long and 500mm thick.
Question and Answer session was carried out with a number of questions from the IOM3 Council and the participants (via the webinar chat room).    Our President declared the closing of this webinar with great appreciation to Mr Gan and thanks to all members and friends for their support.  We hope to be able to host a future talk with Mr Gan to hear about his upcoming research. 
We promise that the capacity for webinars will be increased for our future events to allow more members and practitioners to attend.  Video recorded for this webinar is now available through the IOM3 website and on our IOM3HK YouTube channel, https://youtu.be/Gz8DdpRB2xw.
 

 Our speaker: Mr. CC Gan

 

 Left: Mr. YC Lam; Right: Mr. Tim Leung

 

 Thank you all of your support!