Circular Economic Modelling: Barriers and opportunities in turning circular within the construction sector

Drawing on the findings and insights from two on-going research projects WOOL2LOOP URBCON, we have developed a model to assess circular economic potential while using secondary raw materials (SRMs) substitute OPC (Ordinary Portland cement) partly or fully within building construction industry. Applying our Circular Economy (CEM), assessed business case at each step of value circle sourcing, pre-treatment, production, sales. At describe baseline, intervention, costs, benefit flows identified as result introducing intervention. Furthermore, externalities identify barriers preventing un-fold. While focus usage mineral wool waste, URBCON has broader scope different industrial residuals waste streams suitable produce geopolymer cement. Our analysis shows that pre-treatment costs various SRMs, future supply geographical availability constitute critical factors overall for SRMs. On demand side, main relate standards resistance change sector itself. However, there are also very strong macro trends encouraging reasons stakeholders shift towards climate-neutral production consumption. The paper concludes by discussing scenarios evolution new chains industry structures likely happen in ‘perfect’ economy reality.