대한건축학회논문집 (Journal of the Architectural Institute of Korea)

  • 제39권5호
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  • Pages.197-205
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  • 2023
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  • 2733-6239(pISSN)
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  • 2733-6247(eISSN)
대한건축학회 (Architectural Institute of Korea)
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전돌 가루를 활용한 건축 문화재 수리·복원용 석회 모르타르의 성능 개선

Enhancing the Performance of Lime Mortar for Repairing and Restoring Architectural Heritage Using Traditional Brick Powder

  • 이다희 (한국전통문화대학교 전통건축학과) ;
  • 강성훈 (서울대학교 건축학과) ;
  • 권양희 (한국전통문화대학교 전통건축학과)
  • Lee, Da-Hee (Dept. of Traditional Architecture, Korea National University of Cultural heritage) ;
  • Kang, Sung-Hoon (Dept. of Architecture and Architectural Engineering, Seoul National University) ;
  • Kwon, Yang-Hee (Dept. of Traditional Architecture, Korea National University of Cultural Heritage)
  • 투고 : 2023.02.27
  • 심사 : 2023.05.09
  • 발행 : 2023.05.30
⟨ 이전 논문 다음 논문 ⟩

초록

Late Joseon Dynasty documents reveal the use of crushed roof tiles or bricks as additives for mortars. This study suggests a method for enhancing the performance of mortar to restore and repair architectural heritage. To this end, the effects of traditional brick powder on the hydration and strength development of lime mortar were investigated, with firing temperatures (800℃, 1000℃, 1200℃) and particle sizes (<75 ㎛, 75-150 ㎛, 150-300 ㎛ and 300-500 ㎛) of the powder as main variables, while also considering the binder-to-aggregate ratio (1, 2, 3) as an additional variable. This allowed for a clear understanding of the mortar performance, including influencing factors that were not documented in the historical records, such as fire temperature and particle size. The addition of the brick powder affected the workability and compressive strength of the mortar, with the extent of this impact depending on the firing temperature and particle size. The results of tests on the hydration characteristics such as isothermal calorimetry, X-ray diffraction, and thermogravimetric analysis revealed that the brick powder reacts with hydrated lime under specific conditions of temperature (800℃) and particle size (<150 ㎛). This results in a pozzolanic reaction, forming hydration products such as monocarboaluminate, hemicarboaluminate, stringite, and calcium silicate hydrate. The compressive strength of the lime mortar increased by up to 2.2 times as a result of this reaction. These findings can be used to provide direction for improving the performance of repair and restoration mortars.

키워드

참고문헌

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