WIR-V1.5 | MultiMaterialRecycling

This project focuses in particular on the life cycle of the multi-material carbon concrete, as around 50 % of all raw materials worldwide are used in the construction industry. Currently, demolition primarily produces mineral aggregates such as concrete chippings, which are mainly fed into a downcycling process (e.g. in road construction). Carbon concrete offers the possibility of absorbing a high proportion of these mineral aggregates and thus making them usable again at a high quality level (actual recycling). Together with regional industrial partners, a concrete is to be developed and used on an industrial scale which, with comparable properties to normal concrete, has an above-average proportion of concrete chippings (crushed processed old concrete). The proportion of concrete chippings in carbon concrete is to be increased to up to 60 %, which means that more concrete can be recycled than was previously the case with reinforced concrete (up to 35 %).

Taking into account the objective, the interfaces for avoiding waste quantities are determined both in the textile process chain and in composite component production (point 1). Point 2 focuses on the adaptation of such interfaces, i.e. specific solutions are developed with which waste quantities can be avoided and reused for the production of new components. The focus here is on the recycling of concrete chippings. Processes for processing continuous fibers are also part of the project. In the third point, the newly created process chain will be implemented and validated using demonstrators.