Page 124 - Demo

PRECAST CONCRETE ELEMENTS124 CPI %u2013 Concrete Plant International %u2013 6 | 2025 www.cpi-worldwide.comMock-up Consolis VBI / Peikko Benelux (2024-2025)In 2024 and 2025, Consolis VBI and Peikko Benelux collaboratively constructed a building structure using columns made from multiple materials, including timber, precast concrete, and steel-concrete, all supporting Peikko Deltabeams Green Reuse. The Deltabeams, in turn, carry hollow core slab floors. The connections were specifically designed to ensure the entire structure is remountable.The mock-up was assembled in a dry (covered) environment to closely simulate real-world office conditions. The objective was to assemble and disassemble the structure at least twice.A key distinction from previous experiments is that disassembly was performed without the use of a saw. By eliminating sawing, the reusability of individual components is significantly enhanced, while the environmental impact of the dismantling process is reduced.The reusability of this assembly system has already been demonstrated %u2013 even the threaded rods can be unscrewed and reused.By incorporating edge beams, the hollow core slab floor system is effectively restrained, allowing it to function as a horizontal diaphragm. Additionally, in practical applications, the fa%u00e7ade can be attached to these edge beams.The Peikko Deltabeams have been slightly modified: the openings in the beam webs, which typically facilitate shear dowel action between concrete and steel, have been covered with an additional steel plate to enable disassembly resulting in Deltabeam Green Reuse.Fig. 6: Large-scale mock-up completed by Consolis VBI and Peikko Benelux in 2024-2025.Fig. 7: For the column connections, column shoes were used.Fig. 8: Edge beams were incorporated. Fig. 9: Implementation of tie rods in the joints between the hollowcore slabs.