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Title |
Material Properties of 3D Printed Mortars Produced with Synthetic Fibers and Biopolymers
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Authors |
김효정(Hyo-Jung Kim) ; 이병재(Byung-Jae Lee) ; 김윤용(Yun-Yong Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.4.78 |
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Keywords |
3D 프린팅; 수축 균열; 바이오 폴리머; 합성섬유 3D printing; Shrinkage cracking; Biopolymer; Synthetic fibers |
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Abstract |
In this study, synthetic fibers were applied to reduce shrinkage cracks that may occur in mortar produced by 3D printer. We used a biopolymer in powder form made from cactus stem (CS) as an admixture. The material properties of 3D printed mortar were experimentally evaluated. Replacing methylcellulose(MC) with 10% CS increases compressive strength by 9.84-23.92% regardless of the casting method. In addition, regardless of the casting method, shrinkage change, freeze-thaw resistance, and crack resistance are more effective than Plain. Incorporation of CS increases the polysaccharide macromolecular structure and improves durability. Mortars reinforced with synthetic fibers do not affect compressive strength and freeze-thaw. It is also effective for shrink deformation and crack resistance. Incorporating CS and fibers from 3D-printed mortar was found to be effective for durability and crack resistance.
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