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Title |
Performance Evaluation of Cement Composite Using Multi-Component Binder for Artificial Reef Produced by 3D Printer
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Authors |
서지석(Ji-Seok Seo) ; 김효정(Hyo-Jung Kim) ; 김윤용(Yun-Yong Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.6.139 |
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Keywords |
3D 프린터; ME 방식; 인공어초; 다성분계 결합재 3D printer; ME type; Artificial reef; Multi-component binder |
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Abstract |
In this study, we designed a high-strength, low-alkali type cement composite for artificial reef by mixing various binders and evaluated whetherit is possible to manufacture it with an ME method 3D printer. As a result of the tests, it is found that it is important to control the water-binder ratio,the silica sand-binder ratio, and the type of silica sand in order to control the fluidity of the cement composites to enable 3D printing. The surface qualityof 3D printer output can be achieved by adjusting the amount of viscosity agent added while obtaining printable fluidity. In the cement compositesmixing proportion using the alpha-type hemihydrate gypsum, a setting control agent needs to be used to control the quick setting effect. It is alsonecessary to derive the time to maintain the fluidity, and to apply it when printing. To obtain the required strength, the mix proportion needs to bemodified while satisfying the fluidity level of 3D-printable cement composites. In the present study, 3D-printable mix proportions were designed bythe use of multi-component binders including alpha-type hemihydrate gypsum a for low-alkali type artificial reefs, and the printability was confirmed. A further study needs to be performed to quantitatively evaluate the alkali reduction effect.
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