Characterisation of the Rheological Behaviour of a Resource-Saving Sustainable Concrete in the context of 3D printing

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in Buch/Sammelband/GutachtenBeigetragenBegutachtung

Beitragende

Abstract

In recent years, digital construction methods, such as 3D-printing with concrete, have seen a surge in interest. They address many challenges currently encountered in the construction industry. However, for the digital construction to be successful, both in terms of sustainability and cost-effectiveness, the 3D printable materials must fulfil high requirements, particularly regarding their rheological and mechanical properties. The use of environmentally friendly materials with low clinker content, such as Limestone-Calcined-Clay-Cement (LC3), could further reduce the carbon footprint of these processes. Additionally, integrating recycled aggregate into the 3D printable mix (Printable Recycled Aggregate Concrete: PRAC) could promote resource conservation, environmental protection, and energy efficiency. This study investigates the time-dependent development of the static yield stress and the structural build-up by means of a rapid penetration test and a newly proposed modified cone geometry. These tests enable to realistically describe the material behaviour of new, environmentally friendly 3D printable mixtures with coarse aggregates. The results attained provide a foundation for future efforts to use demolition materials more efficiently in 3D concrete printing.

Details

OriginalspracheEnglisch
TitelFourth RILEM International Conference on Concrete and Digital Fabrication
Herausgeber (Verlag)Springer Science and Business Media B.V.
Seiten22-29
Seitenumfang8
ISBN (elektronisch)978-3-031-70031-6
ISBN (Print)978-3-031-70030-9, 978-3-031-70033-0
PublikationsstatusVeröffentlicht - 2024
Peer-Review-StatusJa

Publikationsreihe

ReiheRILEM Bookseries
Band53
ISSN2211-0844

Externe IDs

ORCID /0009-0009-8930-7036/work/180883012

Schlagworte

Ziele für nachhaltige Entwicklung

Schlagwörter

  • 3D concrete printing, Limestone Calcined Clay Cement, Recycled aggregates, Rheology of fresh concrete