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.