Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation

3D concrete printing is gaining ground in the construction industry. In concrete printing, fresh concrete layers are deposited layer by layer manner like fused deposition modelling process following a computer-aided design (CAD) model. The structural capacity of the printed part mainly depends on...

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Main Authors: Noor Mohamed, Nisar Ahamed, Panda, Biranchi, Tan, Ming Jen, Tay, Daniel Yi Wei, He, Lewei
Other Authors: School of Mechanical and Aerospace Engineering
Format: Conference or Workshop Item
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/88254
http://hdl.handle.net/10220/45699
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-882542020-09-24T20:11:57Z Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation Noor Mohamed, Nisar Ahamed Panda, Biranchi Tan, Ming Jen Tay, Daniel Yi Wei He, Lewei School of Mechanical and Aerospace Engineering Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018) Singapore Centre for 3D Printing 3D Concrete Printing DRNTU::Engineering::Civil engineering::Construction technology Geopolymer DRNTU::Engineering::Mechanical engineering::Prototyping 3D concrete printing is gaining ground in the construction industry. In concrete printing, fresh concrete layers are deposited layer by layer manner like fused deposition modelling process following a computer-aided design (CAD) model. The structural capacity of the printed part mainly depends on the bond strength between the old substrate and new overlaid concrete. Hence, it is essential to measure the inter layer bond strength and its influencing parameters. In this paper, a novel geopolymer ink is considered as reference material, that exhibits thixotropic property, suitable for 3D printing application. The said geopolymer thixotropic build up rate was altered by adding slag in two different percentages. From the experimental outcomes, it was found that, rapid structural build-up and long delay time can cause poor bonding in the interface properties of the printed structure. This delay time depends strongly on the thixotropic behavior, the thickness of the layers and roughness of the interface between the two layers. NRF (Natl Research Foundation, S’pore) Published version 2018-08-28T08:49:02Z 2019-12-06T16:59:11Z 2018-08-28T08:49:02Z 2019-12-06T16:59:11Z 2018 Conference Paper Panda, B., Mohamed, N. A. N., Tay, D. Y. W., He, L., & Tan, M. J. (2018). Effects of slag addition on bond strength of 3D printed geopolymer mortar: an experimental investigation. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018), 62-67. doi:10.25341/D4QG6D https://hdl.handle.net/10356/88254 http://hdl.handle.net/10220/45699 10.25341/D4QG6D en © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore. 6 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic 3D Concrete Printing
DRNTU::Engineering::Civil engineering::Construction technology
Geopolymer
DRNTU::Engineering::Mechanical engineering::Prototyping
spellingShingle 3D Concrete Printing
DRNTU::Engineering::Civil engineering::Construction technology
Geopolymer
DRNTU::Engineering::Mechanical engineering::Prototyping
Noor Mohamed, Nisar Ahamed
Panda, Biranchi
Tan, Ming Jen
Tay, Daniel Yi Wei
He, Lewei
Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation
description 3D concrete printing is gaining ground in the construction industry. In concrete printing, fresh concrete layers are deposited layer by layer manner like fused deposition modelling process following a computer-aided design (CAD) model. The structural capacity of the printed part mainly depends on the bond strength between the old substrate and new overlaid concrete. Hence, it is essential to measure the inter layer bond strength and its influencing parameters. In this paper, a novel geopolymer ink is considered as reference material, that exhibits thixotropic property, suitable for 3D printing application. The said geopolymer thixotropic build up rate was altered by adding slag in two different percentages. From the experimental outcomes, it was found that, rapid structural build-up and long delay time can cause poor bonding in the interface properties of the printed structure. This delay time depends strongly on the thixotropic behavior, the thickness of the layers and roughness of the interface between the two layers.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Noor Mohamed, Nisar Ahamed
Panda, Biranchi
Tan, Ming Jen
Tay, Daniel Yi Wei
He, Lewei
format Conference or Workshop Item
author Noor Mohamed, Nisar Ahamed
Panda, Biranchi
Tan, Ming Jen
Tay, Daniel Yi Wei
He, Lewei
author_sort Noor Mohamed, Nisar Ahamed
title Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation
title_short Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation
title_full Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation
title_fullStr Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation
title_full_unstemmed Effects of slag addition on bond strength of 3D printed geopolymer mortar : an experimental investigation
title_sort effects of slag addition on bond strength of 3d printed geopolymer mortar : an experimental investigation
publishDate 2018
url https://hdl.handle.net/10356/88254
http://hdl.handle.net/10220/45699
_version_ 1681057285715001344