Client: Vermögen und Bau Baden-Würtemberg
Project duration:
Berg² is being built in northern Tübingen, a modern clinic campus for the University Hospital and the University of Tübingen. As part of a feasibility study and a master plan, EPEA — Part of Drees & Sommer, together with Drees & Sommer, investigated how mineral building materials from the dismantling of 15 existing buildings and from excavated soil can be reused in a resource-saving manner.
Specific potentials for circular economy and climate protection
The results show that local treatment at a temporary recycling center allows around 23,000 tons of construction waste and 248,000 tons of soil material to be reused. This avoids around 17,300 truck trips and saves around 690 tons of CO₂. In addition, around 113,000 m³ of landfill volume are saved and primary raw materials such as gravel are preserved.
The concept is also economically convincing: Local treatment is already around 10% cheaper than conventional disposal. In view of rising raw material prices, transport costs and CO₂ pricing, profitability will continue to improve. An innovative part of the study is CO₂ storage through carbonation. In this way, around 10 kilograms of CO2 can be permanently bound per ton of processed demolition concrete.
The project supports key goals of the Baden-Württemberg Strategy Dialogue “Affordable Housing and Innovative Construction” and shows how regional secondary raw material centers can contribute to the implementation of circular construction methods.
