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[C-4.2 Studies on effects of acid depositions to cultural assets and industrial materials in China, Hong Kong, Korea and Japan]

[Contact Person]

Tsuguo MIZOGUCHI
Department of Sociology
Bukkyo University
96 Kita-Hananobocho Murasakino
Kita-ku Kyoto 603, Japan
Phone +81-75-491-2141
Fax +81-75-493-9040

[Total Budget for FY1995-1996]

16,999,000 Yen (FY1996 7,303,000 Yen)

[Abstract]

　The impact of wet and dry deposition of acid components to cultural assets, building and industrial materials was investigated on several materials:bronze, copper carbon steel, marble etc., by exposing under indoor and outdoor conditions at regional levels in China, Hong Kong, Korea and Japan. Different corrosion products were formed, depending on the regional pollution and climate. The concentrations of SO₂ and NO₂ were the most effective factor for the formation of copper corrosions. The corrosion rates have been evaluated. Significant corrosions were found in the sites in China. Thermo-humidistatic chamber experiments have been carried out for quantitative analysis of deteriorations of materials by meteorological elements and air pollutions. Damages of cultural assets were investigated in China and Japan.

[Key Words]

Cultural Asset, Acid Deposition, Exposure Experiment, Materials, Thermo and Humidistatic Chamber