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Title: Printability region for 3D concrete printing using slump and slump flow test
Authors: Tay, Daniel Yi Wei
Qian, Ye
Tan, Ming Jen
Keywords: Engineering::Mechanical engineering
Issue Date: 2019
Source: Tay, D. Y. W., Qian, Y., & Tan, M. J. (2019). Printability region for 3D concrete printing using slump and slump flow test. Composites Part B: Engineering, 174, 106968-. doi:10.1016/j.compositesb.2019.106968
Journal: Composites Part B: Engineering
Abstract: Rheological studies are important for successful 3D concrete printing. The main challenge for successful 3D concrete printing is the complex characteristic the materials should possess. It should be flowable enough to be pumped and extruded through the hose, as well as gaining sufficient strength and stiffness for buildability after the layer by layer deposition. Existing literature has various mixtures proposed for successful 3D concrete printing. Most of these studies used rheometers to measure the dynamic yield stress and plastic viscosity. As the measurement with rheometer is sensitive to the protocols and is controlled by the rheologists, as well as data processing if non-standardized measuring geometries are used, results could vary significantly. This study used standardized field-friendly protocols to measure the slump and slump-flow of the mortars. The pumpability and buildability are evaluated in terms of the pumpability index and maximum height printed before collapsing. These result together with the slump and slump-flow values are used to define the printable region.
ISSN: 1359-8368
DOI: 10.1016/j.compositesb.2019.106968
Rights: © 2019 Elsevier Ltd. All rights reserved. This paper was published in Composites Part B: Engineering and is made available with permission of Elsevier Ltd.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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