This report details the design and research process for the Architectural Engineering Studio 2025-2026 submission by Sam Meeuwis. It shows the deisgn and research for 3D printed geopolymer floating urban housing district.

The cement industry is responsible for approximately 7-8% of global CO2 emissions, and total sector emissions have continued to rise since 2015. Geopolymer concrete (GPC), produced by alkali-activating aluminosilicate waste materials instead of calcining limestone, could reduce these emissions by 40-80% depending on mix design. The Netherlands generates large volumes of construction and demolition waste that could serve as GPC precursors, but whether these streams are available in consistent quality remains unclear. This research combines expert interviews, a RILEM training course, a site visit to Renewi, and a structured literature review to map Dutch material flows and benchmark GPC against OPC and UHPC. The findings confirm that sufficient precursor material exists, but that systematic improvements in demolition practice, quality control and regulatory frameworks are needed before GPC can be reliably deployed as a structural architectural material.