Abstract
Lime has been used as a building and decoration material for thousands of years in China. Recent research has focused on developing new air lime with higher bonding strength, grouts and restoration mortars etc. based on natural hydraulic lime, which is both chemically and mechanically more compatible with historic substances. The most applied lime in China was, and is still air lime, and the traditional slaking and preparation technique has been passed over to the modern generation for most restoration projects. Optimum dosage of Tungoil to lime-earth as damp proofing barrier lies at app. 5 wt%. A kind of patented dispersed air lime modified with additives has been developed, which can be applied as a binder for restoration of traditional lime ornaments or lime paints. Natural hydraulic lime has been introduced into China from 2008 Recently, adhesives and grouting slurries based on natural hydraulic lime have been developed and applied for refitting and cavity filling of delaminated cultural surfaces with proven satisfaction. The preliminary research works show, both air lime and natural hydraulic limes through modification of latest construction chemistry achievements can meet most of restoration requirements.
Highlights
Lime has been used as a building and decoration material for thousands of years in China
Dr Gunter Strübel from Justus-Liebig-Universität Giessen Germany introduced the latest results on the application of natural hydraulic limes (NHL) in conservation and restoration of cultural heritage which was sponsored by the Bundesstiftung für Umwelt (DBU) [1,2]
Didn’t cause many responses from Chinese colleagues. 10 years later, while conserving Huashan Pictographs in Ningming, Guangxi Autonomy under the leadership of China National Academy for Cultural Heritage, conservators met with difficulties in restoring cracked and delaminated lime stones
Summary
The most applied lime in China was, and is still air lime, and the traditional slaking and preparation technique has been passed over to the modern generation for most restoration projects. Optimum dosage of Tungoil to lime-earth as damp proofing barrier lies at app. A kind of patented dispersed air lime modified with additives has been developed, which can be applied as a binder for restoration of traditional lime ornaments or lime paints. Natural hydraulic lime has been introduced into China from 2008 Recently, adhesives and grouting slurries based on natural hydraulic lime have been developed and applied for refitting and cavity filling of delaminated cultural surfaces with proven satisfaction
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