Hong Kong–Zhuhai–Macau Bridge, Hong Kong

Hong Kong to Zhuhai Mega Bridge Installs Isocrete K-Screed

Flowcrete Asia has been involved in the construction of the world’s longest sea crossing bridge, the remarkable Hong Kong–Zhuhai–Macau Bridge (HZMB). The bridge has been built to link the three cities of Hong Kong, Zhuhai and Macau together for the first time.

The $20 billion development faced some truly unique challenges, with the 55-kilometre (34 mi) bridge–tunnel system consisting of a series of three cable-stayed bridges, an undersea tunnel and four artificial islands.

43,000 m2 of Flowcrete Asia’s cementitious subfloor screed solution, Isocrete K-Screed, was supplied for the projects innovatively designed Hong Kong Boundary Crossing Facility (HKBCF). Situated on a 130-hectare reclaimed island, this part of the bridge provide a strategic multi-modal transportation hub for the western Hong Kong side.

The tens of thousands of people that would be moving across the main terminal of this facility every day meant that a highly robust and reliable screed was required, as otherwise the floor area could easily fail and lead to serious operational problems.

Isocrete K-Screed was applied in thicknesses ranging from 75-150mm across the site, including in the customs, clearance and departure halls as well as in the baggage handling area, back-of-house maintenance facilities and the overhead rooftop garden. In the HKBCF, the Isocrete K-Screed layer provided the ideal platform on which to install the specified tile finish.

Isocrete K-Screed is a robust, semi-dry cementitious screed system that incorporates a proprietary additive to produce an early drying, high-strength screed. These properties mean that large-scale developments can speed up the process of applying the screed without sacrificing on critical structural and functional properties.

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