The grey wall of China: inside the world's concrete superpower

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Beijing’s new airport is just the latest megaproject that has seen China pour more concrete every two years than the US did in the entire 20th century

In the suburbs south of Beijing, what could one day be the world’s busiest airport is rapidly taking shape. Nicknamed “the starfish” due to the striking design by Zaha Hadid Architects, the Beijing Daxing international airport is set to open in October, and could eventually handle more than 100 million passengers a year.

While the 52,000-tonne steel exoskeleton covering the airport’s six concourses immediately catches the eye, what lies beneath is familiar to many Chinese mega-projects: concrete – 1.6m cubic metres of it.

This week Guardian Cities investigates the shocking impact of concrete on the planet, to learn what we can do to bring about a less grey world.

Related: Concrete: the most destructive material on Earth

Related: A brief history of concrete: from 10,000BC to 3D printed houses

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Source: china
Link : The grey wall of China: inside the world’s concrete superpower

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