R2Crete

R2Crete is a Melbourne-based engineering startup developing a process to recycle waste concrete into supplementary cementitious material (SCM) and high-quality aggregates for new concrete production. Their eco-friendly SCM and aggregates aim to reduce the usage of ordinary Portland cement and virgin aggregates, helping meet circularity and carbon reduction goals while saving costs associated with waste concrete disposal. R2Crete was founded in 2025 and is privately held. Their website is.

• Climate tech

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