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NEWSwww.cpi-worldwide.com CPI %u2013 Concrete Plant International %u2013 6 | 2025%u201cRecycled concrete debris,%u201d says Oliver Schumacher, Managing Director of RWG, %u201coffers two major benefits: First, we conserve primary raw materials like sand and gravel, which are typically used as aggregates in concrete production. Second, the fine materials produced during the recycling process can be separated as crushed sand and reused as an alternative cementitious raw or filler material in cement production.%u201dThe long-term goal is to establish a circular economy and thus prioritize the use of recycled aggregates over primary raw materials in product manufacturing. %u201cThe demand for recycled concrete (RC concrete) is steadily growing. More and more developers, including the Lagrande Group, place value on building with RC concrete,%u201d explains Oliver Schumacher.Precast construction with CO2-reduced %u201cevoBuild%u201d concrete speeds up the processInitially, the Maison Westend residential complex was planned to be built with in-situ concrete. However, due to time constraints, up to 80 percent of the components had to be constructed using precast or semi-precast concrete elements. %u201cHere, we were able to involve the precast concrete division of Heidelberg Materials AG, which produces and supplies all floor slabs and walls as semi-precast elements, as well as stairs and balconies,%u201d explains Lars L%u00f6wigt from Heidelberg Materials Concrete. The precast floor slabs and double walls were then filled with evoBuild concrete, which has 30% lower CO2 emissions and includes 30% recycled aggregate. The filling of the semi-precast elements, which amounted to around 3,500 cubic meters of ready-mixed concrete, was carried out using concrete pumps from Heidelberg Materials AG, as well Heidelberg Materials produced, delivered, and pumped its evoBuild concrete with 30% reduced CO2 emissions. Precast floor slabs and double walls are ready for installation. %u00a9Heidelberg Materials AG I Linus Lintner