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Analysis of Material Properties of Mortars used in Building Sites of the Joseon Dynasty - Focused on Bukhansanseong Fortress·Namhansanseong Fortress·Suwon Hwaseong Fortress -

조선시대 건물지(建物址)에 사용된 모르타르의 재료적 특성 분석 - 북한산성·남한산성·수원화성을 중심으로 -

  • 김은경 (국립문화재연구소 복원기술연구실) ;
  • 강산하 (국립문화재연구소 복원기술연구실) ;
  • 강소영 (국립문화재연구소 복원기술연구실)
  • Received : 2020.09.22
  • Accepted : 2020.12.04
  • Published : 2020.12.30

Abstract

This study investigated the material properties of mortars used in the construction materials of historical buildings during the Joseon Dynasty. Their mineral composition, chemical composition and physical properties were analyzed using polarizing microscope, X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR), thermo gravimetric-differential scanning calorimetry (TG-DSC), X-ray fluorescence spectrometry (XRF) and mercury intrusion porosimetry (MIP). Calcite was determined to be the main constituent mineral with soil minerals such as quartz, feldspar, and mica, indicating the mortars were manufactured using hydrated lime mixed with soil minerals. There were no differences in constituent minerals among the excavation sites or uses, but the chemical compositions could be classified into groups that appeared similar to each other. The samples showed various pore size distributions with in a range, which indicates that the minerals had various particle sizes. In addition, rice straws were identified, which is thought to reinforce the mortars against shrinkage or cracking.

Keywords

Acknowledgement

이 연구는 국립문화재연구소 문화유산조사연구(R&D)의 일환으로 진행되었으며 연구용 시료를 제공해주신 (재)경기문화재연구원 관계자분들과 유기물의 동정을 도와주신 국립문화재연구소 문화재보존과학센터 관계자분들께 감사드린다.

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