Dulux® Protective Coatings is providing a three coat PUR5 system to protect the bridge's structural steel. Importantly, our specification complies with the Queensland Department of Transport and Main Roads requirements outlined in TMR TN144.
An approved PUR5 system to protect structural steel
The following PUR5 system was selected to deliver maximum durability and an extended maintenance cycle:
- First coat: Dulux® Zincanode® 402 – a two-pack epoxy zinc rich primer.
- Second coat: Dulux® Duremax® GPE – a high performance two pack epoxy formulated for severe environments. It is suitable for fresh and salt-water immersion when cured with Fast Cure Hardener.
- Third coat: Dulux® Weathermax® HBR – a high build recoatable polyurethane topcoat that is ideal for marine environments and can withstand extreme UV exposure.
This system is highly regarded and proven across a number of infrastructure projects, including the Aubin Grove Train Station overpass, which recently received a Level 1 coatings rating seven years after application. Depending on the atmospheric corrosivity category, the system offers maintenance cycles between 15 and 25-plus years.
Specification support from design to tender
Dulux Protective Coatings is providing ongoing support to diverse stakeholders on this project. Our specification was included in the reference design created by COX Architecture.
"We were engaged to deliver a fit-for-purpose coating system that would meet the requirements of the TN144 standard," explains Brendan Lichtendonk our Queensland State Sales Manager. "Durability and warranty periods were also critical."
Brendan also provided coatings advice to BESIX Watpac during the construction tender process.
"Our team is happy to assist builders to interpret and cost specifications," Brendan says.
Following an extensive procurement process, Brisbane City Council appointed Connect Brisbane, led by BESIX Watpac, to design and construct the Kangaroo Point Bridge.
Outlining a program of works
Brendan and the Queensland team continue to add value at every stage of the project. They are working with Beenleigh Steel Fabrications (BSF) and the applicators at Tranzblast, guiding them on the steps and processes required for each stage of construction, including:
- workshop applications
- dockside applications
- over water applications
- maintenance applications.
"We've been working with the design and construction team to deliver a protective coatings painting works procedure. We want to ensure every detail is considered," Brendan says.
Construction started in late 2021, with expected completion in 2024.
Image and footage courtesy of Nathanael Weir.
