In the run-up to the construction of Circulair Centrum Nederland, a full-scale mock-up has been built as a practical test setup. This provides the opportunity to test connection details, structural solutions, and dimensions in real conditions on site.

The evaluation highlighted one key point: the precast hollow-core slabs that were cut to size turned out to be slightly wider than the façade elements. Several solutions have been developed to accommodate this, and together with the parties involved it will be decided which option is the most practical.

In addition, the mock-up confirmed the importance of a good connection between the hollow-core slabs. Because they are separate elements, a solid joint is essential so that the floor behaves as one integrated structure.

In this way, the mock up helps to identify such issues early and to further improve the circular construction process step by step toward realization.