Chinese researchers solve global tuff conservation challenge at Chengde Mountain Resort
【文化中国行】琢石续千秋 凝灰岩文保破解世界难题
A team from the Chinese Academy of Cultural Heritage has developed a method to repair severely weathered tuff (凝灰岩) stone relics at the UNESCO-listed Chengde Mountain Resort, a problem previously considered unsolved worldwide. The technique uses natural calcium carbonate materials inspired by ancient Chinese building practices and shellfish, creating a breathable, durable filler for millimeter-scale cracks. A color database of over 10,000 hues helps restorers match the stone's original appearance.
The view from inside
The report, aired on CCTV's flagship Xinwen Lianbo, frames the achievement as part of the 'Cultural China Tour' (文化中国行) series, which ties heritage preservation to national identity.
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