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Construction waste: The Latest Architecture and News

What is Steel Slag Concrete?

The construction industry is one of the largest in the world, and cement and concrete are literally the building blocks of its success. Evolving from prehistoric caves to today’s towering skyscrapers, concrete structures have and will continue to be vital components of modern civilization, providing long-lasting, reliable support for buildings, roads, bridges, tunnels and dams. So much so that concrete is the most consumed material on Earth, second only to water, while the steel used to reinforce it is by far the most commonly used metal. But this doesn’t come without high environmental costs: concrete accounts for 8% of global CO2 emissions, much of which come from the extraction and transportation of aggregate materials such as sand, gravel and crushed stone.

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Mountains of Construction Debris Accumulate Outside Chinese Cities

Chinese city-dwellers are waking to find eight stories of construction debris outside of their homes. Over two billion tons of waste, outside Beijing and other major cities, is a result of a booming construction industry. "There's no systematic way to deal with [the garbage]," says Wilson W.S. Lu, architecture professor at the University of Hong Kong, "The illegal dumping is everywhere." Recycling efforts have just begun, but local activists believe it will require a radical paradigm shift in the way Chinese residents reclaim material. Read the full New York Times article, "China's Mountains of Construction Rubble."