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How do you make "rice flour mortar"?

The story is that the Great Wall of China was built, in part, but mixing rice with mortar which was then used to fasten bricks together. Now, 1,000s of years later, the mortar is still there, but the bricks have since weathered away.

If I want to build something that will last for thousands of years, I want to use proven technology. Does anyone know how to mix rice mortar, ratios, etc.?

1 Answer

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