Recently commenced is the North South Bypass Tunnel owned by River City Motorway and constructed by LBBJV (Leighton Contractors and Baulderstone Hornibrook Bilfinger Berger Joint Venture)
This project is a twin tunnel design 4.8klm in length using a massive 12.4m Dia., TBM, segmentally lined with 12 segments per ring that are 240mm thick.
The high performance of Dramix steel fibres is being utilised in the TBM sheild Cradles and high performance shotcrete, as well as the Dramix Duomix Fire M6 Polypropylene micro fibres for Fire protection in 30% of segments and 30% of the shotcrete.
