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2019 | OriginalPaper | Buchkapitel

Rheological and Water Transport Properties of Cement Pastes Modified with Diutan Gum and Attapulgite/Palygorskite Nanoclays for 3D Concrete Printing

verfasst von : Siwei Ma, Shiho Kawashima

Erschienen in: First RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018

Verlag: Springer International Publishing

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Abstract

This paper identifies and addresses two challenges in extrusion-based 3D concrete printing from a materials perspective. The first is the effect of self-weight and the weight of subsequent layers on structural build-up. And the second is the excessive water loss of printed materials due to the absence of formwork. Viscosity modifying admixtures (VMAs) are extensively used in cement-based 3D printing projects to achieve sufficient print quality, shape stability, and printability window. This study aims to evaluate VMAs’ effects on the two aforementioned challenges through investigating the evolution of static yield stress under sustained stress at rest and water retention capacity of cement pastes modified with nanoclay and diutan gum.

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Vorheriges Kapitel Characterization of 3D Printing Mortars Made with OPC/CSA Mixes

Nächstes Kapitel Rheological Control of 3D Printable Cement Paste and Mortars

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Titel: Rheological and Water Transport Properties of Cement Pastes Modified with Diutan Gum and Attapulgite/Palygorskite Nanoclays for 3D Concrete Printing
verfasst von: Siwei Ma
Shiho Kawashima
Verlag: Springer International Publishing
Buch: First RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018
Print ISBN: 978-3-319-99518-2

Electronic ISBN: 978-3-319-99519-9

Copyright-Jahr: 2019
DOI: https://doi.org/10.1007/978-3-319-99519-9_6

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