Measurement of tensile bond strength of 3D printed geopolymer mortar

The structural capacity of construction joints in concrete bridges, deck and pavements mainly depends on the bond strength between the old substrate and new overlaid concrete. Sometimes, a mismatch in the properties of old and new concrete may lead to early age failure and shortened service life. Si...

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Main Authors: Panda, Biranchi, Paul, Suvash Chandra, Noor Mohamed, Nisar Ahamed, Tay, Daniel Yi Wei, Tan, Ming Jen
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/88355
http://hdl.handle.net/10220/44654
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-883552023-03-04T17:16:40Z Measurement of tensile bond strength of 3D printed geopolymer mortar Panda, Biranchi Paul, Suvash Chandra Noor Mohamed, Nisar Ahamed Tay, Daniel Yi Wei Tan, Ming Jen School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Geopolymer 3D Concrete Printing The structural capacity of construction joints in concrete bridges, deck and pavements mainly depends on the bond strength between the old substrate and new overlaid concrete. Sometimes, a mismatch in the properties of old and new concrete may lead to early age failure and shortened service life. Since in 3D concrete printing (3DCP), the whole object is made by layer by layer, bond strength is considered as one of the key parameters to ensure stability in the structure. For understanding bond mechanism, it is essential to measure bond strength at the interface between new and old layer and investigate significant parameters affecting this property. In this direction, our current work targets to analyse tensile bond strength of 3D printed geopolymer mortar with respect to printing time gap between layers, nozzle speed and nozzle standoff distance. A novel formulation of fly ash based geopolymer was made and printed using four-axis automated gantry system. Experimental findings reveal that the bond strength is a function of state of interface material between two nearby layers which can be influenced by material strength development rate and 3D printing parameters. NRF (Natl Research Foundation, S’pore) Accepted version 2018-04-06T06:45:12Z 2019-12-06T17:01:24Z 2018-04-06T06:45:12Z 2019-12-06T17:01:24Z 2017 Journal Article Panda, B., Paul, S. C., Noor Mohamed, N. A., Tay, D. Y. W., & Tan, M. J. (2017). Measurement of tensile bond strength of 3D printed geopolymer mortar. Measurement, 113, 108-116. 0263-2241 https://hdl.handle.net/10356/88355 http://hdl.handle.net/10220/44654 10.1016/j.measurement.2017.08.051 en Measurement © 2017 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Measurement, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.measurement.2017.08.051]. 26 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Geopolymer
3D Concrete Printing
spellingShingle Geopolymer
3D Concrete Printing
Panda, Biranchi
Paul, Suvash Chandra
Noor Mohamed, Nisar Ahamed
Tay, Daniel Yi Wei
Tan, Ming Jen
Measurement of tensile bond strength of 3D printed geopolymer mortar
description The structural capacity of construction joints in concrete bridges, deck and pavements mainly depends on the bond strength between the old substrate and new overlaid concrete. Sometimes, a mismatch in the properties of old and new concrete may lead to early age failure and shortened service life. Since in 3D concrete printing (3DCP), the whole object is made by layer by layer, bond strength is considered as one of the key parameters to ensure stability in the structure. For understanding bond mechanism, it is essential to measure bond strength at the interface between new and old layer and investigate significant parameters affecting this property. In this direction, our current work targets to analyse tensile bond strength of 3D printed geopolymer mortar with respect to printing time gap between layers, nozzle speed and nozzle standoff distance. A novel formulation of fly ash based geopolymer was made and printed using four-axis automated gantry system. Experimental findings reveal that the bond strength is a function of state of interface material between two nearby layers which can be influenced by material strength development rate and 3D printing parameters.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Panda, Biranchi
Paul, Suvash Chandra
Noor Mohamed, Nisar Ahamed
Tay, Daniel Yi Wei
Tan, Ming Jen
format Article
author Panda, Biranchi
Paul, Suvash Chandra
Noor Mohamed, Nisar Ahamed
Tay, Daniel Yi Wei
Tan, Ming Jen
author_sort Panda, Biranchi
title Measurement of tensile bond strength of 3D printed geopolymer mortar
title_short Measurement of tensile bond strength of 3D printed geopolymer mortar
title_full Measurement of tensile bond strength of 3D printed geopolymer mortar
title_fullStr Measurement of tensile bond strength of 3D printed geopolymer mortar
title_full_unstemmed Measurement of tensile bond strength of 3D printed geopolymer mortar
title_sort measurement of tensile bond strength of 3d printed geopolymer mortar
publishDate 2018
url https://hdl.handle.net/10356/88355
http://hdl.handle.net/10220/44654
_version_ 1759854398706548736