CONSTRUCTION AND INFRASTRUCTURE: Saving massive resources and reducing CO2 through CPC construction in building construction (in German)
Themes: Bau & Infrastruktur
The building boom and urbanization require an enormous amount of mineral building materials. These account already today for over 40% of the materials used worldwide. Sand, for example, is already becoming scarce and the material is becoming more expensive. It is predicted that in the next 30 years another 2.5 billion people will live in cities and the consumption of mineral materials will increase by a factor of two.
An important approach to counteract this is to use concrete more efficiently with new structural models and to improve the CO2 balance of the concrete. This is because in a building, the supporting structure consisting of the foundation, columns, walls and the ceilings is responsible for approx. 75% of the total weight. The necessary proportion of the ceilings accounts for 40% of the building weight.
Over the last 15 years, the Zurich University of Applied Sciences ZHAW has developed, in collaboration with business partners, a completely new method of construction using concrete, the CPC (Carbon Prestressed Concrete) method. With this construction method, it is possible to efficiently save 75% of the required amount of concrete for concrete ceilings. This new approach with concrete is strongly reminiscent of the transition from building with cast iron to steel construction over 100 years ago. This new construction method and first projects are presented.