Carbon Emissions, Lifespan and Circularity Interaction Strategies

Capital and whole life carbon emissions; circularity, waste and reuse; useful lifespan; net zero and other sustainability issues are often assessed independently. However, there is a significant interaction between these sustainability issues. In this paper the interactions are highlighted and good and poor strategies to combining them are outlined. Examples from published sources are used to illustrate the interactions and strategies. The paper is based on recent research by the author and others in industry and academia. The carbon-circularity- life interaction is primarily focused on bridges and transportation infrastructure. The paper highlights the key differences between infrastructure and building structures, on which much of the current circularity, waste and reuse considerations are aimed.