Conservation of Historic Lime Plaster on Earthen Heritage: a Case Study of Liu’s Family Ancestral Hall in Jinggangshan, Jiangxi

Abstract eng:
Earth is the oldest building material which is still used widely nowadays. Earthen architectural heritage has important values in aspect of history, art, technology and ecological sustainability. Liu Family Ancestral Hall, erected in 1824, in Jinggangshan is one of these representatives. The rammed earth wall was plastered with two layers of lime plaster, of which the composition has been chemically and mineralogically analyzed. The conservation principles have been proposed after documenting the typical defects of the rammed earth wall and related plaster. Based on the comprehensive studies in laboratory, conservation concept inclusive surface consolidation with ethyl silicate, refitting and crack injection with NHL grout, cleaning and restoration of the slogan characters have been worked out. This concept has been implemented on the conservation site and shall function as model for future restoration and conservation.

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