Sarooj
From Infogalactic: the planetary knowledge core
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Sarooj is a type of traditional Iranian water-resistant mortar,[1][2] used in the construction of bridges,[3] and ice pits or earth refrigerators (yakhchal).[4]
It is mad of clay and limestone mixed in a six-to-four ration to make a stiff mix, and kneaded for two days. A portion of furnace slags from baths is added with fiber Louis (egg and straw) is added and newly fixed, then beaten with a 10 cm wooden stick for even mixing. Egg white can be used as a water reducer as needed.
References
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- ↑ The Earth Refrigerators as Earth Architecture at IJESD.org
