@inproceedings{9cad605b5a93414e98881383f710c030,
title = "Accelerating Early Age Properties of Ultra-Low Clinker Cements for Extrusion-Based 3D Printing",
abstract = "In this study, we investigated the influence of commercial sodium nitrate/thiocyanate accelerator compared to calcium sulfoaluminate cement addition on setting time, rheology and reaction kinetics of ultra-low clinker composite cement for extrusion-based 3D printing application. CEM I 52.5 N and a ternary composite cement with 70% clinker replaced by slag and limestone were evaluated. Results indicate that final setting time of 30 min and buildable yield stresses can be attained with less than 5% addition of calcium sulfoaluminate, with ettringite and C-(A)-S-H as main reaction products. This demonstrates the synergy between slag and calcium sulfoaluminate cements can be harnessed to control rheology and hardening. This is significance for evidencing suitability of ultra-low clinker composite cements for extrusion-based 3DCP, thus helping to fulfil its wider potential as a low-carbon concrete technology.",
keywords = "3D printing, Admixtures, Early age properties, Low-carbon cements, Setting time",
author = "Rutendo Rusike and Michael Sataya and Marsh, {Alastair T.M.} and Sergio Cavalaro and Chris Goodier and Bernal, {Susan A.} and Samuel Adu-Amankwah",
year = "2022",
doi = "10.1007/978-3-031-06116-5_13",
language = "English",
isbn = "9783031061189 (pbk)",
series = "RILEM Bookseries",
pages = "87--92",
editor = "Richard Buswell and Ana Blanco and Sergio Cavalaro and Peter Kinnell",
booktitle = "Third RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete (DC 2022)",
}