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dc.contributor.authorPanda, Biranchien_US
dc.contributor.authorSonat, Cemen_US
dc.contributor.authorYang, En-Huaen_US
dc.contributor.authorTan, Ming Jenen_US
dc.contributor.authorUnluer, Ciseen_US
dc.identifier.citationPanda, B., Sonat, C., Yang, E., Tan, M. J. & Unluer, C. (2021). Use of magnesium-silicate-hydrate (M-S-H) cement mixes in 3D printing applications. Cement and Concrete Composites, 117, 103901-.
dc.description.abstractThis study focused on the development of 3D printed building components incorporating MgO–SiO2 binders. The effects of parameters such as MgO/SiO2 and water/binder ratios and superplasticizer dosage were evaluated to produce 3D printable MgO–SiO2 binders. The assessment of rheological and mechanical properties, which led to an optimum mix that satisfied the printability criteria, was supported by microstructural characterization. The best-performing mix in terms of printability and mechanical performance was characterized via x-ray diffraction (XRD), thermogravimetric analysis/derivative thermogravimetry (TG/DTG) and field emission scanning electron microscopy (FESEM) with energy dispersive spectroscopy (EDS). The selected mix exhibited thixotropic behaviour with an ability to recover ~80% of its original viscosity within 60 s of extrusion and a shape retention factor of ~1. The extrudability, shape retention and buildability aspects were successfully demonstrated by printing a 5-layered 3D structure without any deformations. The final product contained brucite and M-S-H as hydration products, which were the main contributor to mechanical performance and microstructural densification.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofCement and Concrete Compositesen_US
dc.rights© 2020 Elsevier Ltd. All rights reserved. This paper was published in Cement and Concrete Composites and is made available with permission of Elsevier Ltd.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.titleUse of magnesium-silicate-hydrate (M-S-H) cement mixes in 3D printing applicationsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchSingapore Centre for 3D Printingen_US
dc.description.versionAccepted versionen_US
dc.subject.keywords3D Concrete Printingen_US
dc.description.acknowledgementThe authors would like to acknowledge Sembcorp Architects & Engineers Pte. Ltd. and National Research Foundation (NRF) Singapore for their funding and support in this research project.en_US
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