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Built Heritage
Fig. 7 | Built Heritage

Fig. 7

From: Types of lime binders in mortars used for the construction of the Ming Great Wall of China and their importance for the development of a conservation strategy

Fig. 7

An expansion of part of the Wall, Zhangjiakou, Hebei Province. Phase 1 (right): earthworks built before the Ming Dynasty from natural stonework without lime binder. Phase 2 (middle): natural stonework renewed at the beginning of the Ming Dynasty. Phase 3 (left): stonework built by the late Ming Dynasty. (Source: Tongji-ACL)

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