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Effects of Printing Patterns on Tensile Strength of 3D-Printed Cement Mortar
The layer-by-layer deposition process in 3D printing of cement-based materials and structures lead to inherent weakness at the interfaces between layers. This severely affects the strengths of 3D printed structures, given weak interfaces trigger failure and promote fast crack propagation. In this sense, the orientations of the interfaces in relation to loading directions on 3D-printed specimens dictate the strength of the specimens. In this work, 3D-printed cement mortar specimens are fabricated following different printing patterns, and their tensile strengths are investigated through a series of indirect tensile tests. Advanced image-based instrumentation is used to obtain the evolutions of full-field strains on the specimen surfaces. Variation of layer orientations and printing patterns have been found to have strong effects on the integrity of the 3D-printed specimens, and the obtained results indicate strong correlations between printing patterns and specimen strengths. This opens potential for optimizing layer orientations in relation to stress conditions to improve strength properties of 3D-printed cement mortar.
Effects of Printing Patterns on Tensile Strength of 3D-Printed Cement Mortar
The layer-by-layer deposition process in 3D printing of cement-based materials and structures lead to inherent weakness at the interfaces between layers. This severely affects the strengths of 3D printed structures, given weak interfaces trigger failure and promote fast crack propagation. In this sense, the orientations of the interfaces in relation to loading directions on 3D-printed specimens dictate the strength of the specimens. In this work, 3D-printed cement mortar specimens are fabricated following different printing patterns, and their tensile strengths are investigated through a series of indirect tensile tests. Advanced image-based instrumentation is used to obtain the evolutions of full-field strains on the specimen surfaces. Variation of layer orientations and printing patterns have been found to have strong effects on the integrity of the 3D-printed specimens, and the obtained results indicate strong correlations between printing patterns and specimen strengths. This opens potential for optimizing layer orientations in relation to stress conditions to improve strength properties of 3D-printed cement mortar.
Effects of Printing Patterns on Tensile Strength of 3D-Printed Cement Mortar
Lecture Notes in Civil Engineering
Ha-Minh, Cuong (editor) / Pham, Cao Hung (editor) / Vu, Hanh T. H. (editor) / Huynh, Dat Vu Khoa (editor) / Huang, Zili (author) / Ali, Zulfiqar (author) / Nguyen, Giang D. (author) / Karakus, Murat (author) / Bui, Ha (author) / Tran, Tung (author)
International Conference series on Geotechnics, Civil Engineering and Structures ; 2024 ; Ho Chi Minh City, Vietnam
2024-06-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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