A process “algorithm” for C&D materials reuse through file-to-factory processes

Abstract

The paper illustrates some of the ongoing results of the interdepartmental research Prosit “PROgettare in SostenibilITà: qualification and digitalization in construction”, analyzing some of the key steps aimed at testing, within the actual regulatory and technological framework, new possible applications of recycled materials from construction and demolition (C&D) in sustainable and innovative supply chains. In Italy, in particular, about 98% of the non-hazardous waste from C&D activities already in 2018, as documented by the Eurostat’s “Recovery rate of construction and demolition waste” report. Nevertheless, C&D waste is mainly reused for the construction of embankments and road foundations. The research, therefore, identifies in the use of file-to-factory technologies a possible way to extend the scope of the reuse of these resources to realize diversified and non-standard manufactures and components, in the perspective of a greater spread of virtuous practices of circular economy in the construction sector. In this sense, a process “algorithm” is described, designed to be scaled and replicated in different contexts for similar purposes.

Keywords

• C&D waste
• urban regeneration project
• 3d print technology
• circular economy

References

1. [1]. CEC, “Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions on the Implementation of the Circular Economy Action Plan, COM2019”, 2019.
2. [2]. European Commission, “EU Construction and Demolition Waste Management Protocol”, 2016.
3. [3]. E. Antonini. Residui da costruzione e demolizione: una risorsa ambientalmente sostenibile. Il progetto VAMP ed altre esperienze di valorizzazione dei residui [E. Antonini (ed.)]. Franco Angeli, Milano, Italia. 2001.
4. [4]. M. Rigillo and M.T. Giammetti, “Management of the C&D waste in the urban regeneration project”, TECHNE. Journal of Technology and Environment, Vol. 22, pp. 240-248, 2021.
5. [5]. ISPRA, “Rapporto Rifiuti Speciali”, 2021.
6. [6]. M. Rigillo, S. Russo Ermolli and G. Galluccio, “Digital rule-based compliance processes. The urban regeneration of ex-Corradini, Naples (IT)”, Agathon. International Journal of Architecture, Art and Design, n. 10, pp. 120-131, 2021.
7. [7]. UNI 8520-2, “Aggregati per calcestruzzo - Istruzioni complementari per l'applicazione della EN 12620 - Parte 2: Requisiti”, 2016.
8. [8]. T.T. Le, S.A. Austin, S. Lim, R.A. Buswell, A.G.F. Gibb and T. Thorpe, “Mix design and fresh properties for high-performance printing concrete”, Materials and structures, n. 45, pp. 1221–1232, 2012.

9. [9]. B. Gang, W. Li, M. Guowei, S. Jay and B. Mingke, “3D printing eco-friendly concrete containing under-utilised and waste solids as aggregates”, Cement and Concrete Composites, n. 120, 2021.
10. [10]. J. Pasco, Z. Lei and C. Aranas, “Additive Manufacturing in Off-Site Construction: Review and Future Directions”, Buildings, Vol. 12 (53), 2022.