Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process

The safety of structure printed by extrusion-based 3D concrete printing (3DCP) is significantly influenced by interlayer bonding, which is governed by fresh material properties and processes, including mixing, printing, and post-processing phases. Much literature focused on improving interlayer bond...

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Main Authors: Weng, Yiwei, Li, Mingyang, Zhang, Dong, Tan, Ming Jen, Qian, Shunzhi
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/148266
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1482662021-05-08T20:11:23Z Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process Weng, Yiwei Li, Mingyang Zhang, Dong Tan, Ming Jen Qian, Shunzhi School of Civil and Environmental Engineering School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering Additive Manufacturing Interlayer Bond Strength The safety of structure printed by extrusion-based 3D concrete printing (3DCP) is significantly influenced by interlayer bonding, which is governed by fresh material properties and processes, including mixing, printing, and post-processing phases. Much literature focused on improving interlayer bond strength via material tailoring/bonding agent addition but gave insufficient attention to other phases' impacts. This study investigates the effects of parameters on interlayer bond strength from different phases in 3DCP, including superplasticizer dosage, printing speed, and curing condition. In the mixing phase, the superplasticizer dosage was increased to reduce I and increase surface moisture content (SMC), consequently improving interface microstructure and interlayer bond strength. In the printing phase, similar results were observed by increasing pumping speed to increase material shear rate. In the post-processing phase, proper curing also improved interlayer bond strength. While SMC has a critical impact on interlayer bond strength, material thixotropic index (I ) probably has a stronger influence. National Research Foundation (NRF) Accepted version 2021-05-03T04:31:26Z 2021-05-03T04:31:26Z 2021 Journal Article Weng, Y., Li, M., Zhang, D., Tan, M. J. & Qian, S. (2021). Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process. Cement and Concrete Research, 143, 106386-. https://dx.doi.org/10.1016/j.cemconres.2021.106386 0008-8846 https://hdl.handle.net/10356/148266 10.1016/j.cemconres.2021.106386 2-s2.0-85101051825 143 106386 en Cement and Concrete Research © 2021 Elsevier Ltd. All rights reserved. This paper was published in Cement and Concrete Research and is made available with permission of Elsevier Ltd. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
Additive Manufacturing
Interlayer Bond Strength
spellingShingle Engineering
Additive Manufacturing
Interlayer Bond Strength
Weng, Yiwei
Li, Mingyang
Zhang, Dong
Tan, Ming Jen
Qian, Shunzhi
Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process
description The safety of structure printed by extrusion-based 3D concrete printing (3DCP) is significantly influenced by interlayer bonding, which is governed by fresh material properties and processes, including mixing, printing, and post-processing phases. Much literature focused on improving interlayer bond strength via material tailoring/bonding agent addition but gave insufficient attention to other phases' impacts. This study investigates the effects of parameters on interlayer bond strength from different phases in 3DCP, including superplasticizer dosage, printing speed, and curing condition. In the mixing phase, the superplasticizer dosage was increased to reduce I and increase surface moisture content (SMC), consequently improving interface microstructure and interlayer bond strength. In the printing phase, similar results were observed by increasing pumping speed to increase material shear rate. In the post-processing phase, proper curing also improved interlayer bond strength. While SMC has a critical impact on interlayer bond strength, material thixotropic index (I ) probably has a stronger influence.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Weng, Yiwei
Li, Mingyang
Zhang, Dong
Tan, Ming Jen
Qian, Shunzhi
format Article
author Weng, Yiwei
Li, Mingyang
Zhang, Dong
Tan, Ming Jen
Qian, Shunzhi
author_sort Weng, Yiwei
title Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process
title_short Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process
title_full Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process
title_fullStr Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process
title_full_unstemmed Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process
title_sort investigation of interlayer adhesion of 3d printable cementitious material from the aspect of printing process
publishDate 2021
url https://hdl.handle.net/10356/148266
_version_ 1699245886675091456