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flag A new eco-friendly building material made from cardboard, soil, and water cuts emissions by 75% and costs less than one-third of concrete.

flag A new sustainable building material made from cardboard, soil, and water is gaining attention as a low-carbon alternative to concrete, cutting emissions by up to 75% and costing less than one-third as much. flag Developed by RMIT University engineers, the cardboard-confined rammed earth uses cardboard tubes to hold compacted soil, eliminating cement and enabling reuse and recycling. flag It performs well in hot climates due to natural thermal regulation, reducing energy use. flag Strength can be adjusted by tube thickness, with a predictive formula developed for design. flag Related research shows carbon fiber-enhanced rammed earth can match high-performance concrete. flag The material supports local, low-impact construction, especially in remote areas, and helps repurpose cardboard waste, advancing sustainable infrastructure.

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