Journal ArticleDOI
Cementitious materials for construction-scale 3D printing: Laboratory testing of fresh printing mixture
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TLDR
In this paper, a framework for performance-based laboratory testing of cementitious mixtures for construction-scale 3D printing is developed, where workability of a fresh "printing mixture" is studied in terms of print quality, shape stability, and printability window.About:
This article is published in Construction and Building Materials.The article was published on 2017-08-01. It has received 411 citations till now. The article focuses on the topics: Cementitious.read more
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Additive manufacturing (3D printing): A review of materials, methods, applications and challenges
TL;DR: A comprehensive review of the main 3D printing methods, materials and their development in trending applications was carried out in this paper, where the revolutionary applications of AM in biomedical, aerospace, buildings and protective structures were discussed.
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Early age mechanical behaviour of 3D printed concrete: Numerical modelling and experimental testing
TL;DR: In this article, a numerical model was developed to analyse the mechanical behavior of fresh, 3D printed concrete, in the range of 0 to 90 min after material deposition, based on a time-dependent Mohr-Coulomb failure criterion and linear stress-strain behaviour up to failure.
Journal ArticleDOI
Effect of surface moisture on inter-layer strength of 3D printed concrete
TL;DR: In this article, the effects of print-time interval on the inter-layer strength, along with compressive and flexural strengths of extrusion-based 3D printed concrete in different directions were investigated.
Journal ArticleDOI
Hydration and rheology control of concrete for digital fabrication: Potential admixtures and cement chemistry
TL;DR: In this article, the main required concrete states for extrusion and deposition processes are analyzed with respect to required performances and potential admixtures, and possible side effects and incompatibilities are discussed, as well as how they could be unconventionally used for printable concrete purposes.
Journal ArticleDOI
Printable properties of cementitious material containing copper tailings for extrusion based 3D printing
TL;DR: In this article, an environmental friendly cementitious mixture that is compatible with an extrusion-based printing process was proposed, where the authors investigated the six replacement ratio of tailing to sand from 0% to 50% and developed a single nozzle printing system.
References
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Book
Concrete: Microstructure, Properties, and Materials
P.K. Mehta,Paulo J.M. Monteiro +1 more
TL;DR: Concrete: Microstructure, Properties, and Materials as mentioned in this paper provides complete details on the microstructure-property relationship approach to provide scientific explanation for the strength and durability of concrete.
Journal ArticleDOI
Automated construction by contour crafting—related robotics and information technologies
TL;DR: Contour crafting (CC) is a recent layered fabrication technology that has a great potential in automated construction of whole structures as well as subcomponents and will most probably be one of the very few feasible approaches for building structures on other planets, such as Moon and Mars.
Journal ArticleDOI
Mix design and fresh properties for high-performance printing concrete
Thanh T. Le,Thanh T. Le,Simon A. Austin,Sungwoo Lim,Richard A. Buswell,Alistair G.F. Gibb,Tony Thorpe +6 more
TL;DR: In this article, the authors present the experimental results concerning the mix design and fresh properties of a high-performance fiber-reinforced fine-aggregate concrete for printing concrete, which has been designed to be extruded through a nozzle to build layer-by-layer structural components.
Journal ArticleDOI
Hardened properties of high-performance printing concrete
Thanh T. Le,Simon A. Austin,Sungwoo Lim,Richard A. Buswell,R. Law,Alistair G.F. Gibb,Tony Thorpe +6 more
TL;DR: In this paper, the authors presented the hardened properties of a high-performance fiber-reinforced fine-aggregate concrete extruded through a 9mm diameter nozzle to build layer-by-layer structural components in a printing process.
Journal ArticleDOI
The origins of thixotropy of fresh cement pastes
TL;DR: In this article, a detailed analysis of the macroscopic behavior of fresh cement pastes is presented, showing that the largest critical strain can be associated with the network of colloidal interactions between cement particles and the smallest critical strain is associated with early hydrates, which form preferentially at the contact points between cement grains.