Concrete Utopia in Busan reuses discarded concrete pipes as urban installation

People live in a city shaped by concrete. As the most widely used material on Earth after water, it defines the physical reality of contemporary urban life while contributing significantly to global carbon emissions. In the context of climate crisis, Concrete Utopia begins as a reflection on this condition, questioning the dominance of a single material while searching for traces of nature’s persistence within the urban environment.

The project draws from the overlooked residue of construction. Discarded concrete pipes, scattered across the city, are reclaimed and reassembled into spatial structures. Produced through centrifugal casting and varying in diameter, these elements are recomposed into adaptable configurations that respond to human scale and movement. Rather than introducing new materials, the intervention operates through recognition and transformation, revealing new possibilities within what already exists.

Through this process, Concrete Utopia proposes a speculative model of a small city. It does not present a fixed form, but an open system of fragments that can be rearranged and reinterpreted. The reuse of concrete infrastructure elements challenges the linear logic of construction and waste, suggesting instead a cyclical approach to urban materiality.

The spatial compositions remain deliberately indeterminate. Their ambiguity invites exploration and participation, encouraging visitors to move through, occupy, and reinterpret the structures. In doing so, the project shifts attention from function to experience, from permanence to adaptability.

At its core, the project positions imagination as a form of resilience. By reactivating discarded materials, it reconsiders the rigidity of everyday urban systems and proposes alternative ways of inhabiting the city. The transformation of heavy, inert concrete into flexible spatial elements extends beyond reuse. It becomes a critical gesture that questions established relationships between material, function, and value.

Concrete Utopia ultimately frames the city as an unfinished condition. Through its fragmentary landscape, it offers a space for reflection on how we build, how we live, and how we might coexist differently with both the built environment and the natural world.

Project Credit

Designer: Hyunje Joo
Design firm: Hyunjejoo_Baukunst
Year: February 2026
Location: Busan, South Korea
Photo: Hyunjejoo_Baukunst

More Photos