In 2014, crews used about 40,000 cubic metres of concrete made with a slag-and-fly-ash geopolymer binder instead of ordinary Portland cement at Australia's Brisbane West Wellcamp Airport. Its 435-millimeter-thick heavy-duty pavement was used for the turning node, apron and taxiway, which carry scheduled 747 cargo flights bound for Hong Kong.

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1. Mon, 14 September 2026

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   • spacedaily.com18:30first to report
     In 2014, crews used about 40,000 cubic metres of concrete made with a slag-and-fly-ash geopolymer binder instead of ordinary Portland cement at Australia's Brisbane West Wellcamp Airport. Its 435-millimeter-thick heavy-duty pavement was used for the turning node, apron and taxiway, which carry scheduled 747 cargo flights bound for Hong Kong.

     Concrete without Portland cement could cut construction's carbon footprint—and a sprawling Australian airport just proved it works at full commercial scale.