Page 142 - Demo

PRECAST CONCRETE ELEMENTS140 CPI %u2013 Concrete Plant International %u2013 1 | 2026 www.cpi-worldwide.com%u2022 Simplified planningParametric standardisation shortens detailing and coordination times.%u2022 Assembly and transportLighter and precisely fitting elements reduce transport costs, crane dimensions and scheduling risks.The economic and ecological added value of the carbon concrete semi-precast wall is based on a few, easily describable levers that can be scaled industrially in the precast plant. Economically, the main advantage is the possibility of significantly reducing wall cross-sections as a result of the corrosion-free carbon reinforcement. This results in an immediately usable gain in floor space in the building as well as reduced concrete and component masses, which simultaneously lowers material, transport and assembly costs. Achieving target costs is crucial for marketability. Analyses show that this requires, above all, a reduction in the costs of reinforcement and supplementary system components. The key contribution here is made by robotic, load path-oriented production of carbon reinforcement (e.g. yarn placement), which enables low-waste in-house production with high process stability and is already economically viable for moderate quantities.The same mechanisms apply ecologically: Smaller cross-sections reduce the carbon footprint in manufacturing, while automated processes minimise waste and energy consumption in the factory and also support the use of recycled fibres in the future. Overall, the carbon concrete double wall thus becomes a scalable factory product in which competitiveness and resource efficiency are systematically linked.This creates clearly demonstrable added value for sustainability-related regulatory systems (e.g. ESG reporting requirements, taxonomy certification or CO2 budgeting).Fig. 5: Direct yarn placement with deflection points and carbon yarn at the Oschatz concrete plantFig. 6a-c: Building in Leipzig with semi-precast walls made of carbon concretea) b) c)