"The concept is brilliantly straightforward. Instead of using traditional formwork that gets removed after concrete sets, builders use cardboard tubes as permanent casings. They compact moistened soil inside these tubes, and the cardboard stays in place, continuously confining and strengthening the earth core. Think of it like a structural hug that never lets go. What makes this so exciting is just how sustainable it really is."
"But with those naturally thick rammed earth walls, that cement is actually overkill. By swapping cement for cardboard, the team created a material with just one quarter of the carbon footprint of concrete at less than one third of the cost. When you break down the numbers, a full-size CCRE column produces only 17.41 kilograms of carbon dioxide equivalent, compared to 77.95 kilograms for ordinary concrete."
Cardboard-confined rammed earth (CCRE) is a structural material formed by compacting moistened soil inside permanent cardboard tubes that remain as confining casings. The cardboard continuously confines and strengthens the compressed earth core, removing the need for added cement in thick rammed-earth walls. CCRE achieves roughly one quarter of the carbon footprint of ordinary concrete while costing less than one third for comparable columns. A full-size CCRE column emits about 17.41 kilograms CO2e versus 77.95 kilograms for concrete. The process can be executed on-site by hand or with machines using local soil, water, and waste cardboard.
Read at Yanko Design - Modern Industrial Design News
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