2026-04-14T02:56:15Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4283522026-02-04T08:30:29Zcom_2072_1033col_2072_452950

3D printed concrete as a source of recycled aggregates: potential for multi-recycling and CO2 sequestration Hormigón impreso en 3D como fuente de áridos reciclados: potencial de multireciclaje y secuestro de CO2 Navarrete, Iván Tošić, Nikola Hermida Arias, José Luis Saavedra Sáenz, Ruth Danni Etxeberria Larrañaga, Miren Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó Additive manufacturing Multi-recycling Density Water absorption Additive manufacturing of concrete (3D printed concrete, 3DPC), is an emerging technology with numerous possible applications and benefits for the digital transition of the construction industry. At the same time, there remain open questions about the environmental suitability of 3DPC. One such aspect is its circularity, i.e. recyclability. Therefore, in this study, the viability of recycling 3DPC is studied on normal- and high-strength 3DPC concretes produced with 0–100% of fine recycled aggregate (fRA). After testing for basic mechanical properties, the specimens were crushed and new (2nd generation) fRA were obtained and tested. The results point to a high potential for recyclability of 3DPC and fRA conducive to multi-recycling and CO2 uptake through carbonation. Peer Reviewed Postprint (published version) 2024-12 Article https://revistaingenieriaconstruccion.uc.cl/index.php/ric/article/view/86048 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PCI2022-132948/ES/RECYCLED AGGREGATES FOR 3D PRINTED CONCRETE STRUCTURES/ http://creativecommons.org/licenses/by/4.0/ Open Access Attribution 4.0 International