Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation
In 3D concrete printing, layer interface and interlayer notch are generated by the layer-by-layer process. Therefore, the 3D printed concrete is anisotropic with the interlayer strength lower than the strengths measured in the other two directions. In order to adequately address this issue, tooth-li...
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sg-ntu-dr.10356-1656262023-04-08T16:47:57Z Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation He, Lewei Li, Hua Chow, Wai Tuck Zeng, Biqing Qian, Ye School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering 3D Concrete Printing Interlayer Strength In 3D concrete printing, layer interface and interlayer notch are generated by the layer-by-layer process. Therefore, the 3D printed concrete is anisotropic with the interlayer strength lower than the strengths measured in the other two directions. In order to adequately address this issue, tooth-like layer interface is adopted in the present study for higher interlayer strength. It is found that the tooth-like interface with tooth angle of 45° increases the interlayer tensile and shear strengths by 294% and 89% respectively, and shifts the failure mode from pure adhesive failure to a mixture of adhesive and cohesive failures. Moreover, a theoretical model is developed for the relationship between the interlayer strength and interfacial tooth angle, and then validated by the experimental data with a relative error of about 5%. By this model, further design and optimization of the interfacial geometry would be possible, for higher interlayer strength subject to different parameters and conditions of 3D concrete printing. Nanyang Technological University National Research Foundation (NRF) Published version The authors acknowledge the financial and technical supports from National Research Foundation of Singapore, SempCorp Design & Construction Pte Ltd., and Singapore Centre for 3D Printing (SC3DP). This work is also supported by Young-scientist Research Cultivation Program of South China Normal University under Grant 21KJ15, in part by the Guangdong Basic and Applied Basic Research Project under Grant 2021A1515011171, and in part by the National Natural Science Foundation of China under Grant 62076103. 2023-04-04T06:54:07Z 2023-04-04T06:54:07Z 2022 Journal Article He, L., Li, H., Chow, W. T., Zeng, B. & Qian, Y. (2022). Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation. Materials and Design, 223, 111117-. https://dx.doi.org/10.1016/j.matdes.2022.111117 0264-1275 https://hdl.handle.net/10356/165626 10.1016/j.matdes.2022.111117 2-s2.0-85137640972 223 111117 en Materials and Design © 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). application/pdf |
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Engineering::Mechanical engineering 3D Concrete Printing Interlayer Strength He, Lewei Li, Hua Chow, Wai Tuck Zeng, Biqing Qian, Ye Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation |
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In 3D concrete printing, layer interface and interlayer notch are generated by the layer-by-layer process. Therefore, the 3D printed concrete is anisotropic with the interlayer strength lower than the strengths measured in the other two directions. In order to adequately address this issue, tooth-like layer interface is adopted in the present study for higher interlayer strength. It is found that the tooth-like interface with tooth angle of 45° increases the interlayer tensile and shear strengths by 294% and 89% respectively, and shifts the failure mode from pure adhesive failure to a mixture of adhesive and cohesive failures. Moreover, a theoretical model is developed for the relationship between the interlayer strength and interfacial tooth angle, and then validated by the experimental data with a relative error of about 5%. By this model, further design and optimization of the interfacial geometry would be possible, for higher interlayer strength subject to different parameters and conditions of 3D concrete printing. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering He, Lewei Li, Hua Chow, Wai Tuck Zeng, Biqing Qian, Ye |
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Article |
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He, Lewei Li, Hua Chow, Wai Tuck Zeng, Biqing Qian, Ye |
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He, Lewei |
title |
Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation |
title_short |
Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation |
title_full |
Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation |
title_fullStr |
Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation |
title_full_unstemmed |
Increasing the interlayer strength of 3D printed concrete with tooth-like interface: an experimental and theoretical investigation |
title_sort |
increasing the interlayer strength of 3d printed concrete with tooth-like interface: an experimental and theoretical investigation |
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2023 |
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https://hdl.handle.net/10356/165626 |
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1764208149174157312 |