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Title |
Self-Healing Performance of 3D-Printable SHCC Produced with Biopolymer Materials
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Authors |
김효정(Hyo-Jung Kim) ; 알레무 아벨 쉬페라우(Alemu Abel Shiferaw) ; 현창진(Chang-Jin Hyun) ; 김형기(Hyeong-Ki Kim) ; 김윤용(Yun-Yong Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2026.30.3.109 |
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Keywords |
3D 프린팅; 바이오 폴리머; 변형 경화형 시멘트 복합체(SHCC); PVA 섬유 3D printing; Biopolymer; Strain-hardening cementitious composites (SHCC); Polyvinyl alcohol fiber |
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Abstract |
This study evaluates the self-healing performance of 3D-Printable SHCC incorporating cactus stem powder (CS), a natural biopolymer material. Additionally, it verifies whether 3D-Printable SHCC incorporating CS (3DCP) exhibits strain-hardening behavior similar to that of general SHCC, as seen in conventional 3D-Printable SHCC. Tensile test results showed that the 3DCP specimen exhibited a lower maximum tensile strain than the conventional SHCC specimen. This is attributed to the relatively higher cracking strength of the 3DCP compared to conventional SHCC.
Permeability tests revealed that while the 3DCP specimens showed higher initial permeability than the SHCC specimens, the permeability of the CS-incorporated 3DCP specimen decreased more rapidly as the healing age increased. When CS was incorporated, the interior of the cracks was observed to be more thoroughly filled with a healing material presumed to be calcium carbonate.
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