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We have developed a process to upcycle End of Life concrete into aggregates, sand and a reactive SCM which can be used as a replacement of cement.
About
100 % Circular concrete - C2CA (Concrete to Cement & Aggregates) is a pioneering company that upcycles waste concrete into sustainable building materials, founded in 2016 by the technical university of Delft and GBN
Key Benefits
With this technology, 100% of the EOL concrete can be upcycled into new high-quality materials and no primary raw materials need to be mined. The technology removes a significant part of the hardened cement paste from the aggregates. This leads to aggregate with low water absorption. Thanks to this, our recycled aggregates and sand can fully replace their virgin counterparts in new concrete.
The ultra-fine cement paste particles can be used to produce low-carbon cementitious binders. As cement is the largest driver of CO2 emissions in concrete this will help significantly reduce the CO2 emissions from concrete.
Thanks to continuous quality control based on a LIBS (Laser Induced Breakdown Spectroscopy) analysis, the aggregates are also of constant, documented quality. As a result, adjustments can be made on site if necessary, and the time-to-market of the high-quality circular raw materials for concrete is considerably shortened. Together with the use of the RFID tags the traceability of this quality is secured
Applications
The technology can be applied for developed markets in order to reduce downcycling and landfilling but also for areas of natural desasters, where our semi-mobile solutions can be brought to the area and prepare building materials for new construction on the spot.