Study on Transparent Finishing [hobun+glue] Colour Paint of Wall Painting on Stones in the Late Koguryo Period

Abstract eng:
The natural inorganic binders applied to stone cultural assets have been recognized nationally and abroad. This study demonstrates, by experiment and a trial fabrication, that the transparent colour paints used for wall painting on stone in the late Koguryo Period are excellent materials for use as hardeners and as a thin-film coating substance on granite and mable. The pigment of the Ca component in the finish layer of wall paintings on lime mortar in the Koguryo Period has also been detected in the transparent finish layer of wall paintings on stone. The objective of this study is to identify the components of the pigments used in transparent finishing, and to identify the binding relationship, capabilities and functions of the stone base and pigment of transparent finishing through the experiments described below. The author of the study selected Ca(OH) 2, aragonite and hobun as white pigments from among eight types of calcium oxide bases (Ca components) found in nature, by taking into account the natural geological conditions in the Koguryo Period and the properties of the pigments. The author used glue and perilla oil as the vehicle (fixing agent) based on ancient documents and other evidential data. The author fabricated specimens in numbers allowed with selected pigments and vehicles by experimenting on ten types of finishing pigments in order to determine the best specimens. The results of the experiments indicate that a combination of hobun and glue solution is the most adequate pigment.

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