Sticky rice mortar

Sticky rice mortar is an ancient building material that originated in China. It utilized organic materials such as sticky rice soup along with inorganic materials such as slaked lime to form a mortar. Its usage has been dated to the Northern Wei Dynasty from the fourth century CE. The mortar provided extra strength, resilience, and water resistance to structures, and hence was an important component in the construction of several historical buildings, including walls and other structures across China.

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