This paper contributes to the circular economy (CE) literature by investigating the drivers of success of the CE implementation in the construction sector and how those drivers can complement any implementation process in small and medium enterprises (SMEs). To do so, we analyzed the case of TECMO Estructuras Metálicas, using the methodology proposed by Jaca and colleagues to implement the CE in SMEs. It is a Colombian company with more than five decades of experience in the manufacture and installation of steel and aluminum structures for small and large building and infrastructure projects. The data were collected between August 2019 and November 2020 through direct communication with the company via workshops, meetings, and company reports. This research found that five drivers are relevant for implementing CE in the construction sector: fertile ecosystem, management commitment, identification of valuable materials, green teams, and CE intermediaries. Moreover, this study also contributes to teaching the implementation of the CE in companies, since it shows that through the methodology presented, implementation projects can be developed in postgraduate classes.

This study pretends to highlight the usefulness of developing action research (AR) projects as a way to develop a set of integrated studies based on a dual contribution: academic and managerial ones. The concept of AR Project goes one step ahead in terms of AR methodology as an extended case study. We describe an specific AR Project associated to a doctoral theses in the field of innovation intermediation. As main results, we have learned from this experience that (1) the relationship between researchers and practitioners must be collaborative and based on trust and commitment, (2) an AR Project is broader and more complex than a case study, (3) the diffusion of research results must be differentiated for practitioners and academics, and finally, (4) the AR Project is an open and collaborative innovation practice.