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Used foundry sands represent the highest amount of solid wastes generated by foundries. Classified by European Union regulations as non hazardous waste, they represent a relevant source to be reused in several industrial sectors, in building construction primarily.In present paper, the properties of mortars and concretes containing different dosages of used foundry sand (UFS) as partial replacement of sand were investigated in both fresh and hardened conditions. In particular, higher percentages of addition, but lower if referred to the whole aggregate (fine and coarse), were considered in concretes than in mortars. Both mortars and concretes were evaluated with respect to consistency of the fresh mixture and compressive strength of the hardened material. Elastic modulus determination of the hardened material was carried out on concretes.A low (10%) amount of used foundry sand does not change the mortar's performances. In the presence of higher additions a workability decreasing can be outlined, and then a higher dosage of superplasticizer is required in order to keep it constant. Mechanical performances lower of about 20-30% than those of the conglomerate without used foundry sand are observed. The higher penalization it seems to concern to the conglomerates of better quality (i.e. lower water-cement ratio).

The circular economy is a growing and strategic topic and has motivated changes and innovations in several segments of research, businesses, financial sectors and public administration. In this context, the Emilia-Romagna Region (Italy) is considered a pioneer in Italy, due to the efforts taken for the transition towards a circular economy. It was the first Italian region to launch a specific law on the subject besides to have relevant projects. Thus, the objective of this paper is to analyse the efforts aimed at the transition to a circular economy in the Emilia-Romagna Region, Italy, considering technological, legal–regulatory, and financial points of view under a market orientation. Complementary, we pointed out the main initiatives related to the circular economy and the areas of interest. To gather data, we conducted applied, descriptive and qualitative research. The data collection was based on documental analysis, and also considering the results of previous questionnaires and interviews. In addition, we applied a dedicated questionnaire and we consider the outcomes of the project Reinwaste—Remanufacture the food supply chain by testing Innovative solutions for zero inorganic waste. The unit of analysis was the project conducted by ART-ER, entitled “Accelerare la transizione verso l’economia circolare in Emilia-Romagna: Uno studio sullo stato dell’arte, le competenze e i bisogni tecnologici e finanziari”. This paper can be useful for researchers and practitioners acting in this field, which can use the results based on public and private policies, investment decisions and further studies.

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