| Abstract |
Due to their material volume, ceiling systems are one of the biggest challenges in mulit-storey construction on the way to climate-friendly building. Here, the traditional masonry cap ceiling proves to be a robust, efficient alternative with innovation potential. Compared to widely used reinforced concrete flat slabs, their production requires only 50 % of the grey energy. To further investigate their application potential, six ceiling systems for office or school use were comparatively examined. Detailed life cycle assessments (LCA) were carried out for these constructions based on pre-dimensioning. While the reinforced concrete flat ceiling has a Global Warming Potential (GWP) of 136 kgCO(2)e/m(2), the vault ceiling achieves a value of only 64 kgCO(2) e/m(2) in the most favourable case. In addition to assessing the energy input in manufacturing, principles of a circular economy are applied on both the material and construction side, Within a framework of practical experiments, three transformations were carried out on the historical construction: by substituting the steel girders in the system with timber, a new type of timber-masonry hybrid system is created; with the help of digital manufacturing tools, an economical and contemporary production method is demonstrated; by optimising the bricks used, the raw ceiling is enriched with multifunctional acoustic properties. |
