Development of nanofiber reinforced reactive magnesia-based composites for 3D printing

Nanofiber reinforced reactive magnesia-based composites (nano-FRMC) with varying nanofiber contents (0–0.6%) at different water to binder ratios (0.35–0.50) were developed. Fresh properties (slump, flow diameter, degree of levelling) and mechanical performance were systematically studied. Experiment...

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Main Authors: Chu, Shaohua, Yang, En-Hua, Unluer, C.
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/172949
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1729492024-01-03T06:37:20Z Development of nanofiber reinforced reactive magnesia-based composites for 3D printing Chu, Shaohua Yang, En-Hua Unluer, C. School of Civil and Environmental Engineering Engineering::Civil engineering Nanofiber Reinforcement Mechanical Properties Nanofiber reinforced reactive magnesia-based composites (nano-FRMC) with varying nanofiber contents (0–0.6%) at different water to binder ratios (0.35–0.50) were developed. Fresh properties (slump, flow diameter, degree of levelling) and mechanical performance were systematically studied. Experimental results revealed that the inclusion of nanofibers altered the shape stability of the mixtures and accelerated the convergence of the degree of leveling. Mechanical tests revealed an optimum nanofiber content for achieving the highest compression strength associated with fiber bridging and networking effects. Thermogravimetric analysis and scanning electron microscopy tests revealed the effect of nanofibers on the enhanced formation of hydrate and carbonate phases and microstructural evolution. A thixotropy index was introduced to model the variation of slump and flow diameter subjected to jolting, under the combined effect of nanofiber content and water to binder ratio. Agreement was achieved between predicted and experimental results, deepening the understanding of nano-FRMC for 3D printing applications. Ministry of National Development (MND) The authors would like to acknowledge financial support from the Ministry of National Development, Singapore (CoT-V1-2020-1). 2024-01-03T06:37:20Z 2024-01-03T06:37:20Z 2023 Journal Article Chu, S., Yang, E. & Unluer, C. (2023). Development of nanofiber reinforced reactive magnesia-based composites for 3D printing. Construction and Building Materials, 366, 130270-. https://dx.doi.org/10.1016/j.conbuildmat.2022.130270 0950-0618 https://hdl.handle.net/10356/172949 10.1016/j.conbuildmat.2022.130270 2-s2.0-85145973473 366 130270 en CoT-V1-2020-1 Construction and Building Materials © 2022 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
Nanofiber Reinforcement
Mechanical Properties
spellingShingle Engineering::Civil engineering
Nanofiber Reinforcement
Mechanical Properties
Chu, Shaohua
Yang, En-Hua
Unluer, C.
Development of nanofiber reinforced reactive magnesia-based composites for 3D printing
description Nanofiber reinforced reactive magnesia-based composites (nano-FRMC) with varying nanofiber contents (0–0.6%) at different water to binder ratios (0.35–0.50) were developed. Fresh properties (slump, flow diameter, degree of levelling) and mechanical performance were systematically studied. Experimental results revealed that the inclusion of nanofibers altered the shape stability of the mixtures and accelerated the convergence of the degree of leveling. Mechanical tests revealed an optimum nanofiber content for achieving the highest compression strength associated with fiber bridging and networking effects. Thermogravimetric analysis and scanning electron microscopy tests revealed the effect of nanofibers on the enhanced formation of hydrate and carbonate phases and microstructural evolution. A thixotropy index was introduced to model the variation of slump and flow diameter subjected to jolting, under the combined effect of nanofiber content and water to binder ratio. Agreement was achieved between predicted and experimental results, deepening the understanding of nano-FRMC for 3D printing applications.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Chu, Shaohua
Yang, En-Hua
Unluer, C.
format Article
author Chu, Shaohua
Yang, En-Hua
Unluer, C.
author_sort Chu, Shaohua
title Development of nanofiber reinforced reactive magnesia-based composites for 3D printing
title_short Development of nanofiber reinforced reactive magnesia-based composites for 3D printing
title_full Development of nanofiber reinforced reactive magnesia-based composites for 3D printing
title_fullStr Development of nanofiber reinforced reactive magnesia-based composites for 3D printing
title_full_unstemmed Development of nanofiber reinforced reactive magnesia-based composites for 3D printing
title_sort development of nanofiber reinforced reactive magnesia-based composites for 3d printing
publishDate 2024
url https://hdl.handle.net/10356/172949
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