Using only mud mixed with a binder material, the hydraulic press creates a LEGO-shaped brick in under 30 seconds. Lime is the suggested binder material, as it is completely natural and it stabilizes the moisture in the brick – eliminating swelling, shrinking, or cracking from excessive dryness. After the press is filled with the mud and lime mixture, 30 tons of hydraulic pressure turn it into a BTC (une brique en terre compressée). BTC’s can be use used for structures up to two stories tall, making them perfect for international aid or for eco-minded builders around the globe.
For more on how the Meco’press operates, check out this animation.