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논문 기본 정보

자료유형
학술저널
저자정보
Jae-In Lee (Wonkwang University) Chae-Young Kim (Wonkwang University) Joo-Ho Yoon (Wonkwang University) Se-Jin Choi (Wonkwang University)
저널정보
대한건축학회 ARCHITECTURAL RESEARCH ARCHITECTURAL RESEARCH Vol.25 No.3
발행연도
2023.9
수록면
53 - 59 (7page)

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초록· 키워드

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Concrete is widely used in the construction industry; however, it has the disadvantage of deteriorating durability due to cracks occurring because of climate change and shrinkage. In addition, when cement is used as a binder, CO₂ emitted during the manu-facturing process accounts for ~8% of global CO₂ emissions. In this study, eco-friendly cementitious materials such as blast furnace slag powder and fly ash (FA) were used as cement substitutes in the production of mortar containing a chitosan-based polymer (CP), and their fluidity, compressive strength, and self-healing performance were examined. The 28-day compressive strength of the control sample was ~32.4 MPa (the lowest for all tested samples), while that of the sample containing 5% CP and 20% FA was ~49.6 MPa (the highest for all tested samples) and ~53.1% higher than that of the control sample. Even at a healing age of 56 days, the control sample exhibited the lowest healing performance, whereas the samples containing CP (5%, 10%) and 20% FA demonstrated excellent healing performance. After 28 days, the decrease in crack size for the control sample was minimal; however, for the sample containing only cement and CP, a significant decrease in crack size was observed even after 28 days. This study confirmed that the appropriate use of CP and cementitious materials improves not only compressive strength but also the self-healing performance of mortar.

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Abstract
1. INTRODUCTION
2. MATERIALS AND EXPERIMENTAL METHOD
3. EXPERIMENTAL RESULT AND DISCUSSION
4. CONCLUSIONS
REFERENCES

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