Original Article

Econ. Environ. Geol. 2017; 50(6): 497-508

Published online December 31, 2017

https://doi.org/10.9719/EEG.2017.50.6.497

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Analysis of Surface Contaminants and Deterioration Degree on the Seated Stone Statue of Buddhist Master Seungga at Seunggasa Temple in Seoul, Korea

Sung Han Kim, Chan Hee Lee* and Araki Naruto

Department of Cultural Heritage Conservation Sciences, Kongju National University, Gongju, 32588, Korea

Correspondence to : chanlee@kongju.ac.kr

Received: November 28, 2017; Revised: December 10, 2017; Accepted: December 13, 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

This study was carried out to document and diagnose the conditions of the seated stone statue of Buddhist Master Seungga in Seunggasa temple immediately after its conservation treatment, which was found to be long covered in surface of white materials. The stone Halo was researched along with the Statue, and basic data was secured through precisely examination and nondestructive diagnosis. The result from the surface deterioration evaluation shows that both the Statue and Halo had a little bit of physical deterioration, although their level of chemical deterioration was proportionally higher due to discoloration. The physical property diagnosis using ultrasonic measurements on the Statue and Halo showed that the average ultrasonic velocity was found to be 3,570 m/s and 3,373 m/s, respectively, which corresponds to grade III, an indication of a favorable physical property. The surface covered materials were detected to be Ca, Ti, Pb, Fe, Al and Si, emanating from Hobun (Oster shell powder; CaCO3) or lime (CaO·Ca(OH)2) and silicate minerals. Furthermore, Ti and Pb seems to be the component of the white coloring pigments, titanium white (TiO2) and white lead (2PbCO2·Pb(OH)2). Therefore, the seated stone statue of Buddhist Master Seungga is presumed to be painted with Hobun or lime and thereafter painted over with titanium white and white lead.

Keywords Buddhist Master Seungga, stone Halo, deterioration evaluation, ultrasonic velocity, white pigment

승가사 석조승가대사좌상의 손상도 및 표면오염물 분석

김성한 ·이찬희* ·아라키 나루토

공주대학교 문화재보존과학과

요 약

Article

Original Article

Econ. Environ. Geol. 2017; 50(6): 497-508

Published online December 31, 2017 https://doi.org/10.9719/EEG.2017.50.6.497

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Analysis of Surface Contaminants and Deterioration Degree on the Seated Stone Statue of Buddhist Master Seungga at Seunggasa Temple in Seoul, Korea

Sung Han Kim, Chan Hee Lee* and Araki Naruto

Department of Cultural Heritage Conservation Sciences, Kongju National University, Gongju, 32588, Korea

Correspondence to:chanlee@kongju.ac.kr

Received: November 28, 2017; Revised: December 10, 2017; Accepted: December 13, 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

This study was carried out to document and diagnose the conditions of the seated stone statue of Buddhist Master Seungga in Seunggasa temple immediately after its conservation treatment, which was found to be long covered in surface of white materials. The stone Halo was researched along with the Statue, and basic data was secured through precisely examination and nondestructive diagnosis. The result from the surface deterioration evaluation shows that both the Statue and Halo had a little bit of physical deterioration, although their level of chemical deterioration was proportionally higher due to discoloration. The physical property diagnosis using ultrasonic measurements on the Statue and Halo showed that the average ultrasonic velocity was found to be 3,570 m/s and 3,373 m/s, respectively, which corresponds to grade III, an indication of a favorable physical property. The surface covered materials were detected to be Ca, Ti, Pb, Fe, Al and Si, emanating from Hobun (Oster shell powder; CaCO3) or lime (CaO·Ca(OH)2) and silicate minerals. Furthermore, Ti and Pb seems to be the component of the white coloring pigments, titanium white (TiO2) and white lead (2PbCO2·Pb(OH)2). Therefore, the seated stone statue of Buddhist Master Seungga is presumed to be painted with Hobun or lime and thereafter painted over with titanium white and white lead.

Keywords Buddhist Master Seungga, stone Halo, deterioration evaluation, ultrasonic velocity, white pigment

승가사 석조승가대사좌상의 손상도 및 표면오염물 분석

김성한 ·이찬희* ·아라키 나루토

공주대학교 문화재보존과학과

Received: November 28, 2017; Revised: December 10, 2017; Accepted: December 13, 2017

요 약

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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