Crushing concrete liberated from demolished buildings to provide recycled aggregate is argued to be a sustainable way of reducing material extraction. Yet, in these high‐energy processes, large amounts of new cement is often used, negating this as a low‐carbon activity. Professor of Architecture and Structural Design at the Ecole Polytechnique Fédérale de Lausanne (EPFL) Corentin Fivet and his co‐authors highlight the advantages of utilising second‐hand uncrushed concrete while augmenting traditional equipment to remarkable tactile and optimum effect.