Towards zero-waste structures through intergration of reclaimed wood and 3d printing

Abstract

In the pursuit of sustainable development, the construction industry faces the dual challenges of material scarcity and the environmental impact of its material usage. This thesis explores the potential of hybrid structures, specifically employing reused wooden elements, to address these challenges and transition towards a zero-waste economy. The research investigates the application of computational design and digital fabrication techniques in order to maximize the reuse of wooden structural elements without the need for remanufacturing, thereby reducing waste and carbon footprint. Using the TU Delft modelling hall of the BK faculty, this study introduces a new approach that combines stock-constrained design with additive manufacturing. This approach utilizes 3D printing technology to create flexible, adaptable connections that accommodate the irregular dimensions of reclaimed wood, thus optimizing the use of available materials. The study evaluates the environmental impact through a life-cycle assessment. In the end it will compare the proposed method to the traditional construction practice and other methods that stimulate the reuse of wood. The findings indicate that the proposed hybrid design methodology effectively reduces waste over the successive generations. However, the data also reveals that the carbon footprint has not yet decreased. Further research is necessary to identify the next steps for reducing carbon emissions and achieving a sustainable, zero-waste methodology. This study contributes to the body of knowledge by bridging the gap between theoretical design and practical application, offering a scalable model that can eventually be implemented in real-world scenarios to promote a circular economy in the building sector.