The construction industry is the world's largest polluter and consumer of resources. In addition to increasing demands in the area of environmental sustainability, increasingly scarce resources pose a major challenge in international competition. At the same time, the construction sector generates large quantities of construction waste and other industrial by-products. The resulting demolition material is currently mainly used as low-grade bulk material (downcycling) instead of being recycled into high-quality products. Brick is a widely used and popular building material because it is a true all-rounder. However, the production of bricks is very resource- and energy-intensive. The project idea is to produce bricks entirely from secondary raw materials for the first time and to drastically reduce the required firing temperature and firing time by using a novel alkaline-activated binder. This new brick can prevent the extraction of new resources and significantly reduce CO2 emissions caused by the firing process.