学術雑誌論文 〔報告〕瓦造文化遺産の保存環境と塩類析出に関する調査―INAXライブミュージアム「窯のある資料館」を事例に―

佐々木, 淑美  ,  犬塚, 将英

内容記述
There is increasing interest in modern heritage, especially brick heritage, and its conservation and registration as cultural property have been examined actively. Many examples of brick heritage suffer from salt crystallization and,for the conservation of suchheritage, it is necessary to eliminate supply of moisture and control the environment. As a basic study to examine deterioration and effective measures for conservation, surveys were conducted at the “Museum of Kiln”in the INAX Live Museum on June 30, July 7 and July 8, 2016. The environment in the “Museum of Kiln”is air-conditioned and is not influenced by outside air. On the inner and outer walls of the kiln in the museum, various kinds of noticeable salt crystallizations were observed through analysis using an X-ray diffractometer: calcite(CaCO3), thenardite(Na2SO4), epsomite(Mg2SO4・7H2O), astrakhanite(Na2Mg(SO4)2・4(H2O)), gypsum(CaSO4・2H2O), aphthitalite(K3Na(SO4)), eugsterite(Na4Ca(SO4)3・2(H2O))and halite(NaCl). Depositions of thenardite were concentrated in the northern half of the kiln, whereas those of epsomite were confirmed in the southern half and the roof.Halite was identified only on the southeastern inner wall of the kiln,which was heated and dried by an indirect lighting placed near the wall.It seems that salt crystallizations tend to occur on brown bricks,which were made at low temperature, and cause significant deterioration. The possibility of using a portable X-ray diffractometer was also evaluated as a non-invasive analytical method for investigation of cultural properties on site.
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