Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement

This work was designed to evaluate the interlayer strength of 3D-printed mortar with postinstalled interlayer reinforcement. Two methods of postinstalled interlayer reinforcement were considered according to the amount of overlapping. The first method did not include overlapping of the interlayer re...

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Autores principales:	Jihun Park, Quang-The Bui, Jungwoo Lee, Changbin Joh, In-Hwan Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	3D-printed mortar reinforcement interlayer bonding strength curing conditions Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/277f2c14a5344a3b8670d0fbf1e1cce8
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spelling	oai:doaj.org-article:277f2c14a5344a3b8670d0fbf1e1cce82021-11-11T18:09:38ZInterlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement10.3390/ma142166301996-1944https://doaj.org/article/277f2c14a5344a3b8670d0fbf1e1cce82021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6630https://doaj.org/toc/1996-1944This work was designed to evaluate the interlayer strength of 3D-printed mortar with postinstalled interlayer reinforcement. Two methods of postinstalled interlayer reinforcement were considered according to the amount of overlapping. The first method did not include overlapping of the interlayer reinforcement, while the second method included overlap lengths of 20 and 40 mm. Additionally, two different curing conditions were considered: air-curing conditions and water-curing conditions. The compressive, splitting tensile, and flexural tensile strengths of 3D-printed mortar specimens with different reinforcement methods and curing conditions were investigated under three loading directions. The three loading directions were defined based on the three planes of the printed specimens. The compressive, splitting tensile, and flexural tensile strengths were dependent on the loading directions. In particular, the splitting and flexural tensile strengths decreased considerably when tensile stresses acted on the interlayers of the 3D-printed mortar specimens. However, when longitudinal interlayer reinforcement penetrated the printed layers, the flexural tensile strength or interlayer bonding strength of the printed specimens increased significantly at the interlayers. In addition, mortar specimens reinforced with overlap lengths of 20 and 40 mm were investigated in this study. The flexural tensile strength or interlayer bonding strength of 3D-printed mortar decreased after treatment under air-curing conditions because the interlayers of the printed mortar formed more pores under these conditions and were more vulnerable under loading. Finally, the findings of this study suggested that interlayer reinforcement is a potential method for improving the interlayer bonding strength of 3D-printed mortar.Jihun ParkQuang-The BuiJungwoo LeeChangbin JohIn-Hwan YangMDPI AGarticle3D-printed mortarreinforcementinterlayerbonding strengthcuring conditionsTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6630, p 6630 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	3D-printed mortar reinforcement interlayer bonding strength curing conditions Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	3D-printed mortar reinforcement interlayer bonding strength curing conditions Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Jihun Park Quang-The Bui Jungwoo Lee Changbin Joh In-Hwan Yang Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement
description	This work was designed to evaluate the interlayer strength of 3D-printed mortar with postinstalled interlayer reinforcement. Two methods of postinstalled interlayer reinforcement were considered according to the amount of overlapping. The first method did not include overlapping of the interlayer reinforcement, while the second method included overlap lengths of 20 and 40 mm. Additionally, two different curing conditions were considered: air-curing conditions and water-curing conditions. The compressive, splitting tensile, and flexural tensile strengths of 3D-printed mortar specimens with different reinforcement methods and curing conditions were investigated under three loading directions. The three loading directions were defined based on the three planes of the printed specimens. The compressive, splitting tensile, and flexural tensile strengths were dependent on the loading directions. In particular, the splitting and flexural tensile strengths decreased considerably when tensile stresses acted on the interlayers of the 3D-printed mortar specimens. However, when longitudinal interlayer reinforcement penetrated the printed layers, the flexural tensile strength or interlayer bonding strength of the printed specimens increased significantly at the interlayers. In addition, mortar specimens reinforced with overlap lengths of 20 and 40 mm were investigated in this study. The flexural tensile strength or interlayer bonding strength of 3D-printed mortar decreased after treatment under air-curing conditions because the interlayers of the printed mortar formed more pores under these conditions and were more vulnerable under loading. Finally, the findings of this study suggested that interlayer reinforcement is a potential method for improving the interlayer bonding strength of 3D-printed mortar.
format	article
author	Jihun Park Quang-The Bui Jungwoo Lee Changbin Joh In-Hwan Yang
author_facet	Jihun Park Quang-The Bui Jungwoo Lee Changbin Joh In-Hwan Yang
author_sort	Jihun Park
title	Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement
title_short	Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement
title_full	Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement
title_fullStr	Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement
title_full_unstemmed	Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement
title_sort	interlayer strength of 3d-printed mortar reinforced by postinstalled reinforcement
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/277f2c14a5344a3b8670d0fbf1e1cce8
work_keys_str_mv	AT jihunpark interlayerstrengthof3dprintedmortarreinforcedbypostinstalledreinforcement AT quangthebui interlayerstrengthof3dprintedmortarreinforcedbypostinstalledreinforcement AT jungwoolee interlayerstrengthof3dprintedmortarreinforcedbypostinstalledreinforcement AT changbinjoh interlayerstrengthof3dprintedmortarreinforcedbypostinstalledreinforcement AT inhwanyang interlayerstrengthof3dprintedmortarreinforcedbypostinstalledreinforcement
_version_	1718431932008628224

Interlayer Strength of 3D-Printed Mortar Reinforced by Postinstalled Reinforcement

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