Tag Archives: cement

Concrete Doesn’t Have to Be an Ecological Nightmare

Clockwise from upper left: the Pantheon in Rome; Boston City Hall; Saarinen’s TWA terminal at JFK airport; Zaha Hadid’s Sheikh Zayed Bridge in Dubai. Photo: Getty Images

Today, cooking one ton of cement yields nearly a ton of CO2, and concrete plants pump out nearly 8 percent of the world’s carbon emissions. Since an ever-growing population can’t wean itself from its primary building material, warding off climate change is going to require a cleaner way to make it.

Source: Concrete Doesn’t Have to Be an Ecological Nightmare

Reversible Concrete: 3D Printing for Easy Deconstruction & Reuse | Urbanist

temporary rock string concrete

Effectively any shape is possible thanks to the 3D printing process, while the results are strong and durable, relying on the physics of jamming and collective strength of composited stones. The reversibility of the process makes this a far more eco-friendly way to build rigid structures from durable materials that still dismantle on demand.

temporary concrete jammed rocks

via Reversible Concrete: 3D Printing for Easy Deconstruction & Reuse | Urbanist.

The concrete industry digs up 3 tons of rock per year for every person on Earth : TreeHugger

aggergate

Ugo Bardi: But what’s impressive is the growth of “construction minerals” which stands for sand, rock, cement and the like…. Think about that: 25 billion tons per year corresponds to more than three tons per person. Think of a ten kg cube [22 lbs] of rock and cement delivered to you and deposited in front of your door every morning, every day of the year.

via The concrete industry digs up 3 tons of rock per year for every person on Earth : TreeHugger.