• 보존과학연구
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• s.33
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• pp.125-148
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• 2012

The Octagonal nine storied pagoda of Woljeongsa Temple consists mainly of granite with the rockforming minerals quartz, plagioclase, microcline, and biotite. The surface of the stone stupa is light brown that has been discolored by the rust from the metal ornament and aids. The surface of the stylobate and roof stone is colonized by biological contaminants. Therefore, a comprehensive deterioration diagnosis was carried out in this study, and conservation treatment was conducted. It was proven that the $Fe^{2+}$ yield increases depending on the count of poultice used with oxalic acid, but the $Mg^{2+}$, $Al^{3+}$, and $Ca^{2+}$ yields were marginal following the preliminary test. Therefore, the use of poultice is an effective way of removing the rust, and only marginally influences the rock. The biological contaminants were removed through dry cleaning, and the soil located under the contaminants was removed through wet cleaning. Based on this, the dry and wet cleaning of all the biological contaminants, and the use of poultice with oxalic acid, were done to remove the rust. For the conservation treatment of the metal ornament, the rust was removed through physical cleaning, and anticorrosion treatment was performed on the iron ornament using Renaissance wax and copper ornament by BTA.

• 보존과학연구
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• s.34
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• pp.110-122
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• 2013

The Seven-story Stone Pagoda of Jeongamsa Temple consists of dolomitic limestone. The surface of the stone stupa is efflorescene. There are spaces between parts in the stereobate and part of roof at the fifth story and above. The space between parts is colonized by biological contaminants. There are breakaway parts in the third, fifth, sixth, seventh story. The dry and wet cleaning of all the biological contaminants, efflorescene. The steam cleaning of rest of efflorescene. The use of poultice with oxalic acid, were done to remove the rust. Breakaway parts are inosculated by L30 and Por-rok. Spaces between parts are waterproofing by Porrok. After treatment, the efflorescene of part of waterproofing are comparatively scarce. So waterproofing is effective at reduced efflorescene and waterproof.