Title:
Influence of Cellulose Nanofiber and Limestone Filler on Early-Age Properties of Mixtures for 3D-Printed Concrete
Author(s):
Ala Douba
Publication:
Web Session
Volume:
ws_S25_AlaDouba.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
3/30/2025
Abstract:
Cellulose nanofibers (CNF) are biodegradable materials gaining interest in the 3D printing of concrete, particularly for their ability to modify the rheological properties of cementitious mixtures. This capability positions CNF as a sustainable and economical viscosity modifier for the 3D printing applications. Additionally, recent studies reported on additional benefits of incorporating CNF in concrete, including acceleration of hydration and enhancement of mechanical properties. Similarly, limestone filler is also increasingly used as a partial cement substitute to reduce clinker content in blended cements. This presentation will cover the rheological properties, printability and buildability of 3D-printing mixtures containing CNF and limestone filler. The influence of these materials on early-age hydration kinetics and mechanical properties of these mixtures will also be presented. The proposed mixtures demonstrated improved rheology and mechanical properties, and thus offer a sustainable and cost-effective choice for 3D concrete printing applications.