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Mix design and fresh properties for high-performance printing concrete

Le, T. T.; Austin, S. A.; Lim, S.; Buswell, R. A.; Gibb, A. G. F. and Thorpe, A. (2012). Mix design and fresh properties for high-performance printing concrete. RILEM Materials & Structures, 45(8) pp. 1221–1232.

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This paper presents the experimental results concerning the mix design and fresh properties of a high-performance fibre-reinforced fine-aggregate concrete for printing concrete. This concrete has been designed to be extruded through a nozzle to build layer-by-layer structural components. The printing process is a novel digitally controlled additive manufacturing method which can build architectural and structural components without formwork, unlike conventional concrete construction methods. The most critical fresh properties are shown to be extrud- ability and buildability, which have mutual relation- ships with workability and open time. These properties are significantly influenced by the mix proportions and the presence of superplasticiser, retarder, accelerator and polypropylene fibres. An optimum mix is identi- fied and validated by the full-scale manufacture of a bench component.

Item Type: Journal Item
Copyright Holders: 2012 RILEM
ISSN: 1871-6873
Project Funding Details:
Funded Project NameProject IDFunding Body
Freeform Construction: Mega-scale Rapid Manufacturing for ConstructionEP/E002323/1EPSRC (Engineering and Physical Sciences Research Council)
Keywords: additive manufacturing; build; concrete; extrusion; open time; printing
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Space
Item ID: 37879
Depositing User: Sungwoo Lim
Date Deposited: 11 Jul 2013 10:22
Last Modified: 11 Dec 2018 16:19
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