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Evaluation of the Crack Healing Efficiency of Mortar Incorporating Self-healing Pellets based on Cementitious Materials
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시멘트계 재료 기반의 균열 자기치유 환을 혼입한 모르타르의 균열치유 성능 평가

논문 기본 정보

Type
Academic journal
Author
Yoon, Hyun-Sub (경기대) Lee, Jae-Yun (경기대) Yang, Keun-Hyeok (경기대) Park, Sang-Hun (운진건설기업)
Journal
ARCHITECTURAL INSTITUTE OF KOREA Journal of the Architectural Institute of Korea Vol.38 No.4(Wn.402) KCI Excellent Accredited Journal SCOPUS
Published
2022.4
Pages
207 - 215 (9page)

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Evaluation of the Crack Healing Efficiency of Mortar Incorporating Self-healing Pellets based on Cementitious Materials
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Abstract· Keywords

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This study aims to examine the practical feasibility of self-healing pellets that were manufactured using cementitious materials to repair mortar cracks. Two types of the crack self-healing pellets were prepared: surface hardening coating treatments and double coating encapsulation treatments. The crack healing efficiency of the pellets was assessed by the water-permeability tests for mortars with artificially induced cracks. The compressive strength development of mortars including the self-healing pellets treated with surface hardening coating was comparable to control mortars not inclusive of the pellets. For the crack closure against the nominal width of 0.3 mm at an age of 56 days, the mortar specimens with pellets treated with the surface hardening coating exhibited a 91% healing rate, whereas the pellets treated with the double coating encapsulation displayed a healing rate that did not exceed 75%. Overall, the self-healing pellets with surface hardening coating treatments were promising in repairing shrinkage or thermal cracks developed in mortars.
#균열 #자기치유 #환 #정수위 투수 시험 #Crack #Self-healing #Pellet #Water-permeability Test

Contents

Abstract
1. 서론
2. 실험 개요
3. 실험 결과 및 분석
4. 결론
REFERENCES

References (23)

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Feng, J., Dong, H., Wang, R., & Su, Y. (2020). A novel capsule by poly (ethylene glycol) granulation for self-healing concrete. Cement and Concrete Research, 133, doi:10.1016/j.cemconres.2020.106053 Crossref Jiang, J., Li, W., & Yuan, Z. (2015). Influence of mineral additives and environmental conditions on the self-healing capabilities of cementitious materials. Cement and Concrete Composites, 57, 116-127. google schola Kim, H. J., Yang, K. H., & Yoon, H. S. (2021). Evaluation of self-healing performance of mortars by self-healing pillet produced using inorganic materials. Proceedings of the Korean Institute of Building Construction Conference, 21(1), 303-304. google schola Korea Agency for Technology and Standards (2021). Methods of testing cements - Determination of strength, KS L ISO679, Korea Standard Association, 1-19. (In Korean) google schola Korea Agency for Technology and Standards (2021). Standard Test Method for Tensile Splitting Strength of Concrete, KS F 2423. Korea Standard Association, 1-4. (In Korean) google schola

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