[논문]자기치유 하이브리드 캡슐 혼합율에 따른 시멘트 복합재료의 치유성능에 관한 실험적 연구

최연왕; 박준호; 김용직; 오성록

doi:10.14190/jrcr.2022.10.4.531

[국내논문] 자기치유 하이브리드 캡슐 혼합율에 따른 시멘트 복합재료의 치유성능에 관한 실험적 연구
An Experimental Study on the Healing Performance of Cement Composites According to Mixing Ratio of Self-Healing Hybrid Capsules 원문보기

Journal of the Korean Recycled Construction Resources Institute = 한국건설순환자원학회 논문집, v.10 no.4, 2022년, pp.531 - 538

최연왕 (세명대학교 토목공학과) , 박준호 (세명대학교 토목공학과) , 김용직 (대진대학교 스마트건설환경공학부) , 오성록 ((주)뉴저스트 기술연구소)

초록
AI-Helper

본 연구에서는 자기치유 하이브리드 캡슐을 제조하였다. 균열 자기치유 하이브리드 캡슐을 시멘트 질량 기준으로 3 %, 5 % 및 7 % 혼합하여 자기치유 시멘트 복합재료 배합을 진행하였으며, 자기치유 하이브리드캡슐 혼합율에 따른 품질 및 치유성능 평가하였다. 실험 결과, 자기치유 하이브리드캡슐을 혼합율이 증가할수록 균열 치유성능을 향상시키는 효과가 큰 것으로 나타났지만 품질성능이 감소하는 경향이 나타났다. 따라서 하이브리드 캡슐의 혼합율은 5 % 이내로 사용하는 것이 품질성능을 약 10 % 이내로 감소시키며, 치유성능 약 90 % 이상을 확보할 수 있을 것으로 판단된다.

Abstract ▼ AI-Helper

In this study, the self-healing hybrid capsules were prepared, were mixed with 3 %, 5 %, and 7 % based on cement mass. The healing performance were evaluated according to mixing ratio self-healing hybrid capsule. As a result of the experiment, it was found that the crack healing performance improved as the mixing rate of the self-healing hybrid capsule increased, but the quality performance tended to decrease. Therefore, it is judged that using the mixing ratio of the hybrid capsule within 5 % reduces the quality performance to within about 10 % and secures about 90 % or more of the healing performance.

주제어

표/그림 (18)

그림 Fig. 1. Size of SC
그림 Fig. 2. Size of MC
그림 Fig. 3. Crack Induction test specimens
그림 Fig. 4. Constant water flow test
그림 Fig. 5. Surface crack monitoring
표 Table 1. Mixing ratio of cement composites
그림 Fig. 6. Relationship between mixing ratio of HC and flow according to the loss time
그림 Fig. 7. Relationship between mixing ratio of HC and compressive strength according to age
그림 Fig. 8. Relationship between mixing ratio of HC and flexural strength according to age
그림 Fig. 9. Relationship between mixing ratio of HC and splitting tensile strength according to age
그림 Fig. 10. Relationship between initial water flow rate and healing rate according to healing period (plain)
그림 Fig. 11. Relationship between initial water flow rate and healing rate according to healing period (HC-3)
그림 Fig. 12. Relationship between initial water flow rate and healing rate according to healing period (HC-5)
그림 Fig. 13. Relationship between initial water flow rate and healing rate according to healing period (HC-7)
그림 Fig. 14. Before and after surface crack monitoring (plain)
그림 Fig. 15. Before and after surface crack monitoring (HC-3)
그림 Fig. 16. Before and after surface crack monitoring (HC-5)
그림 Fig. 17. Before and after surface crack monitoring (HC-7)

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용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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