Effects of deposition velocity in the presence/absence of E6-glass fibre on extrusion-based 3D printed mortar

Shakor, P; Nejadi, S; Sutjipto, S; Paul, G; Gowripalan, N

Effects of deposition velocity in the presence/absence of E6-glass fibre on extrusion-based 3D printed mortar

Shakor, P

Nejadi, S Sutjipto, S Paul, G

Gowripalan, N

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Publication Type:: Journal Article
Citation:: Additive Manufacturing, 2020, 32
Issue Date:: 2020-03-01

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Field	Value	Language
dc.contributor.author	Shakor, P https://orcid.org/0000-0002-6617-261X	en_US
dc.contributor.author	Nejadi, S	en_US
dc.contributor.author	Sutjipto, S	en_US
dc.contributor.author	Paul, G https://orcid.org/0000-0002-3478-0020	en_US
dc.contributor.author	Gowripalan, N https://orcid.org/0000-0001-6930-2056	en_US
dc.date.issued	2020-03-01	en_US
dc.identifier.citation	Additive Manufacturing, 2020, 32	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138106
dc.description.abstract	© 2020 Additive Manufacturing (AM) technologies are widely used in various fields of industry and research. Continual research has enabled AM technologies to be considered as a feasible substitute for certain applications in the construction industry, particularly given the advances in the use of glass fibre reinforced mortar. An investigation of the resulting mechanical properties of various mortar mixes extruded using a robotic arm is presented. The nozzle paths were projected via ‘spline’ interpolation to obtain the desired trajectory and deposition velocity in the reference frame of the manipulator. Along each path, various mortar mixes, with and without chopped glass fibre, were deposited at different velocities. Tests were conducted to determine their mechanical performance when incorporated in printed structures with different layers (1, 2, 4 and 6 layers). The results are compared with those of conventional cast-in-place mortar. In this study, the mixes consist of ordinary Portland cement, fine sand, chopped glass fibres (6 mm) and chemical admixtures, which are used to print prismatic- and cubic-shaped specimens. Mechanical strength tests were performed on the printed specimens to evaluate the behaviour of the materials in the presence and absence of glass fibre. Robot end-effector velocity tests were performed to examine the printability and extrudability of the mortar mixes. Finally, horizontal and vertical line printing tests were used to determine the workability, buildability and uniformity of the mortar mix and to monitor the fibre flow directions in the printed specimens. The results show that printed specimens with glass fibre have enhanced compressive strength compared with specimens without glass fibre.	en_US
dc.relation.ispartof	Additive Manufacturing	en_US
dc.relation.isbasedon	10.1016/j.addma.2020.101069	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.title	Effects of deposition velocity in the presence/absence of E6-glass fibre on extrusion-based 3D printed mortar	en_US
dc.type	Journal Article
utslib.citation.volume	32	en_US
utslib.for	0910 Manufacturing Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CAS - Centre for Autonomous Systems
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2022-01-23T00:00:00+1100
pubs.publication-status	Published	en_US
pubs.volume	32	en_US

Abstract:

© 2020 Additive Manufacturing (AM) technologies are widely used in various fields of industry and research. Continual research has enabled AM technologies to be considered as a feasible substitute for certain applications in the construction industry, particularly given the advances in the use of glass fibre reinforced mortar. An investigation of the resulting mechanical properties of various mortar mixes extruded using a robotic arm is presented. The nozzle paths were projected via ‘spline’ interpolation to obtain the desired trajectory and deposition velocity in the reference frame of the manipulator. Along each path, various mortar mixes, with and without chopped glass fibre, were deposited at different velocities. Tests were conducted to determine their mechanical performance when incorporated in printed structures with different layers (1, 2, 4 and 6 layers). The results are compared with those of conventional cast-in-place mortar. In this study, the mixes consist of ordinary Portland cement, fine sand, chopped glass fibres (6 mm) and chemical admixtures, which are used to print prismatic- and cubic-shaped specimens. Mechanical strength tests were performed on the printed specimens to evaluate the behaviour of the materials in the presence and absence of glass fibre. Robot end-effector velocity tests were performed to examine the printability and extrudability of the mortar mixes. Finally, horizontal and vertical line printing tests were used to determine the workability, buildability and uniformity of the mortar mix and to monitor the fibre flow directions in the printed specimens. The results show that printed specimens with glass fibre have enhanced compressive strength compared with specimens without glass fibre.

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http://hdl.handle.net/10453/138106