b"SMARTER, SHARPERCASE STUDY NO. 4 Sydney Harbour Bridge Concrete Works This major project involved considerable innovation in technique and Brefni used ultra-high- materials, with the use of ultra-high-performance fibre-reinforced concrete for performance fibre-reinforcedthe first time in Australia. concrete which has no steelAs part of the planning process, a training facility was established at a Sydney reinforcing yet flash sets toTrains yard in Chullora to practice the mixing and complete testing such as 100mPA in 12 hours. Due toflow tests, tensile testing, mixing production testing, and training. Brefni the chemical process of setting,developed a training manual for the construction team and developed the up to 200kg of ice is procuredQA and work instructions in consultation with Dura Technologies (the for each pour.supplier). Dura attended the mock trials and the first three track possessions to help us overcome any onsite issues. Client: Sydney TrainsEffective working within tight 'window' staging Due to the location, there were fixed times to complete the scope: track Value: $10 millionshutdown periods are 48 hours at a time. As a result, it was imperative the project was completed within tight timeframes. Duration: Jan 2019MarchDelicate logistics and stakeholder 2023 (ongoing)management Brefni carefully considered all activities prior to construction. Mixing the Relevant featuresconcrete in-situ on the Harbour Bridge involves coordinating hi-rail plant access, mobilising a purpose-built colloidal mixer and road closures with RMS LIVE SITE BRIDGEto provide access to handle large amounts of materials on any given shutdown. CONCRETING WORKSEffective dust and environmental management on windy site FIRST TIME USING INNOVATIVEBrefni developed specific work instructions and methodologies to manage PRODUCT IN AUSTRALIAand mitigate the risk of concrete spill. This involves having the concrete washout area on the ballast, away from the water; pre-wetting the formwork MULTIPLE KEY STAKEHOLDERSto do a leakage test prior to concrete pour; and carrying out supervisory environmental checks every two hours. BREFNI|14"