Circlua Renwa produces a family of cementitious materials made from high‑quality mining waste clays, using proprietary, fully electrified and renewable‑fuel processes. The circular components match the performance of traditional cement while significantly reducing clinker content, thereby lowering CO₂ emissions in construction. Their globally integrated logistics and supply chain enable large‑scale adoption of low‑emission building materials.
Funding
Funding not disclosed
Founders
Product
Problem
Concrete production relies heavily on clinker, a carbon‑intensive material, contributing significantly to global CO₂ emissions. Simultaneously, mining operations generate large quantities of clay waste that are typically landfilled, representing an untapped resource.
Solution
Circlua Renwa converts high‑quality mining waste clays into low‑emission cementitious components through a proprietary, fully electrified process powered by renewable fuels. The resulting Cleanwa family of alkaline activators delivers a volumetric activation efficiency far greater than traditional clinker, enabling substantial clinker reduction or full substitution while maintaining comparable performance and workability. By improving the mechanical properties of the final concrete, the materials support the construction sector’s decarbonisation targets without requiring new handling procedures. Circlua’s globally integrated logistics network ensures the circular products can be supplied efficiently to projects worldwide.
Target Audience
Primary customers are cement manufacturers, ready‑mix concrete producers, and large‑scale construction firms that require low‑carbon binders and seek to meet sustainability regulations.
Features
- Circular feedstock sourced from mining sand and clay waste, turning a disposal stream into a construction resource
- Proprietary electrified processing using 100 % renewable‑fuel energy, resulting in markedly lower CO₂ emissions than conventional cement production
- Cleanwa alkaline activators provide higher volumetric activation efficiency than clinker, allowing smaller cement dosages
- Enables full clinker substitution in cement blends while preserving or enhancing concrete strength and durability
- Materials are customizable for a range of concrete applications, from structural to precast elements
- Improves concrete’s mechanical performance, reducing the need for additional admixtures
- End‑to‑end global logistics and supply‑chain management for reliable, on‑time delivery to construction sites worldwide