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Deterioration Mechanism Interpretation and Surface Contaminant Analysis of the Five-Storied Stone Pagoda in Tapriri, Uiseong

의성 탑리리 오층석탑의 표면오염물 분석 및 손상메커니즘 해석

  • Lee, Mi Hye (Conservation Science Division, National Research Institute of Cultural Heritage) ;
  • Chun, Yu Gun (Conservation Science Division, National Research Institute of Cultural Heritage) ;
  • Lee, Myeong Seong (Conservation Science Division, National Research Institute of Cultural Heritage)
  • 이미혜 (국립문화재연구소 보존과학연구실) ;
  • 전유근 (국립문화재연구소 보존과학연구실) ;
  • 이명성 (국립문화재연구소 보존과학연구실)
  • Received : 2013.08.07
  • Accepted : 2013.10.11
  • Published : 2013.10.28

Abstract

The Uiseong Tapriri Five-Storied Stone Pagoda (National Treasure No. 77) is typical stone cultural heritage in Unified Silla Dynasty, Korea. The pagoda has been occurred black, brown discoloration and microcrack, exfoliation, granularity decomposition with white discoloration because of continuous weathering. As the results of analysis for the contaminants, chemical weatherings are generated that black contaminant by manganese oxide, brown contaminant by iron oxide, white contaminants by gypsum and taranakite. And physical weatherings, such as microcrack, exfoliation, are occurred by salt(gypsum) crystallization. Therefore, these need to remove the contaminants according to the conservation treatment manual, and regular monitoring using P-XRF to preserve long-term the Five-Storied Stone Pagoda at Tapri-ri, Uiseong.

의성 탑리리 오층석탑(국보 제77호)은 통일신라시대의 대표적인 석조문화재이다. 현재 이 석탑은 지속적인 풍화로 인해 전체적으로 흑색, 황색, 백색변색이 발생되어 있으며 백색변색이 발생한 부분에서 미세균열, 박리박락, 입상분해가 집중적으로 분포해 있다. 표면오염물에 대한 분석결과, 흑색변색은 망간산화물, 황색변색은 철산화물, 백색변색은 석고와 타라나카이트로 인해 발생한 것으로 확인하였다. 또한, 석탑에 발생한 물리적 훼손은 암석내부에서 석고의 결정화 작용으로 인해 발생한 것으로 판단된다. 따라서 의성 탑리리 오층석탑을 장기적으로 보존하기 위해서는 보존처리 매뉴얼에 따라 석고를 중심으로 표면오염물을 제거하고 P-XRF를 활용한 정기적인 모니터링이 요구된다.

Keywords

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