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.
via Reversible Concrete: 3D Printing for Easy Deconstruction & Reuse | Urbanist.
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.
Handbook of recycled concrete and demolition waste is a standard reference for all those involved in the civil engineering sector, as well as academic researchers in the field.
