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Title |
Analysis of Buildability and Strength Characteristics of Cement-based Composite Materials by Manufacturing Method of Laminated Specimens
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Authors |
서은아(Eun-A Seo) ; 이호재(Ho-Jae Lee) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.5.9 |
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Keywords |
3D 프린팅; 적층성능; 적층시험체; 계면; 압축강도 3D Printing; Buildability; Laminated specimen; Interface; Compressive strength |
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Abstract |
In this study, the lamination performance and strength characteristics of cement-based composite materials according to the laminated specimens manufacturing method were analyzed. As a result of evaluating the buildability according to the layer height, the highest dimensional stability was shown when the layer height was 10 mm in all parts. The mold casting specimen and the printing-Z specimen showed the same compressive strength performance at the age of 28 days. On the other hand, the compressive strength at 28 day of printing-X specimen was the lowest at 71.72 MPa, and 8% lower than that of the mold casting specimen and the printing-Z specimen. The split tensile strength of the laminated specimen may show similar performance to that of the mold casting specimen, but the strength performance may decrease by more than 10% depending on the direction of the layer and the number of layers in the specimen. As a result of the interface analysis of the laminated specimen through X-ray CT analysis, it was confirmed that pores of a certain size were distributed along the interface of the layer.
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