When building the dismantling of
In view of the growing shortage of raw materials, increasing construction costs and the climate crisis, new strategies were discussed in order to keep building materials in the circulation and to transform existing buildings in accordance with resources. 600 million tons of building materials are installed annually, 220 million tons of waste are produced. It is not just possible to use materials as long as possible
emphasized Prof. Petra Mieth, It’s also about a new attitude. We have to think about the dismantling when building.
Waste: not the end, but the beginning
Ralf Pietsch, lawyer and managing director of the demolition association North in his lecture, explained how the legal situation is Waste right. He stimulated to rethink: Waste is no longer the end, but the beginning.
Martin Rücker, head of the construction technology, construction industry and awarding department in Ministry of the Interior, Local, Living and Sport explained to the participants the legally secure use of secondary construction products. Alexander Böttcher (Ministry of the Interior, Locales, Housing and Sport, Procurement Test Center for Municipal Construction Benefits) gave a lecture on the award in the area of sustainable building.
Everyone is talking – we do
That started on August 1, 2024 Project KWSH Under the direction of Prof. Petra Mieth, Prof. Raphael Kampmann and Prof. Günther Schall. In this research project on Department of construction the prerequisites and criteria for the use of used building materials and elements in the sense of the circular economy or sustainable construction in Schleswig -Holstein are to be examined. Specifically, it is about the use of used building materials such as recycling concrete and recycled construction wood.
Constanze Borghoff, Bastian Franzenburg and Niklas Pelka deal with the topic of recycling in construction. Using the example of wood floor coverings, windows and concrete preferred parts, they made it clear at the Lübeck construction day 2025: dismantling is difficult, there are many regulations, new purchase is currently even significantly cheaper. Although the system is complex and changes are therefore difficult: it doesn’t have to stay that way. An example: Niklas Pelka examines as part of his promotion with Prof. Raphael Kampmann at TH Lübeck the development of recycling concrete (R-concrete). Currently, only one percent of construction projects in Germany are realized with R-concrete
he regrets. We want to change that.
“We see opportunities”
The participants of the Lübeck construction day agree: the distant goal is to change the linear economy (remove resources, use, dismantle, dispose) towards a circular economy (remove, use, use, reuse, reuse, reuse new resources). This is still a long way, it requires patience and many small steps. The TH Lübeck is on the way. We are optimistic that we will build more sustainable in the future
according to Prof. Günther Schall. We don’t see the problems, we see the possibilities.
About the Lübeck construction day
Since 2010, experts from science, construction practice and administration have come together at the Lübeck construction day in order to exchange ideas about the current and future topics in construction. The goal is to learn from each other: This is how the participation in the Lübeck construction day is from the Architects and engineering chamber Schleswig-Holstein recognized as a half -day training event with four teaching units. The next Lübeck construction day will take place in May 2026.
More dates
10th to September 14th, 2025: The north building, especially the Conbau Nord from 10th to 11th September – The construction congress in the north with the topics of heat transition, demography and standards. Conbau Nord is also recognized as a further training.
10th to September 14th, 2025: as part of the Northern building finds a discussion round of the Forum circuit management construction Instead of, topics are: reduction in bureaucracy through better implementation and strengthening of the approval authorities (e.g. in bimsch and landfill procedures), public acceptance and political communication of the landfill requirement, framework conditions for the reuse of construction products (including compatibility with funding guidelines), equivalence of reelanders in accordance Hazardous Substances Ordinance and LAGA M23, optimization of municipal climate protection concepts, improved CO2 balance sheet through the use of RC products and regional raw materials.