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they used logs. clay brick, stones, and more
Mortar is the substance used to bind building materials together. It is laid between bricks to seal them in place.
they used herbal remedies an made it with mortar and pestal
As a rule you should use mortar. There is a special mortar that is used made for high heat. Use just enough for the bricks to bond. In UK its called fire cement.
you use the mortar at the great bridge to fix it
newly made logs from trees basicaly
No they were beyond that. Romans used spears. Pioneers had guns.
The chimney must be structurally sound and water must not enter between bricks. Conditions which may require repointing include: (1) mortar erosion more than 6 mm, (2) crumbling mortar, (3) hairline cracks in the mortar, and (4) cracks between the brick and mortar. Don't hire just any bricklayer. Repointing is a exacting and separate skill from bricklaying. Most important, the old and new mortar formulations must be identical, so the repairs have the same density and rigidity (not just appearance)! If the existing mortar crumbles easily, this indicates the mortar is too weak (perhaps from the use of sand that contained dried sea salts).
no?
Yes, in fact when rocks were not available they would use sticks or logs to make the chimney, but the mud was usually more of a clay substance, something that would tend to harden when heated instead of crumbling.
they use pioneers
Mortar is used to bind building materials together when building a building.