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Mortar
BUILDING MATERIALS & CONSTRUCTIONbeginner
Definition
A paste of cement (or lime), sand, and water used to bind masonry units together and fill the joints between them. Mortar distributes loads evenly across bricks or stones and seals against water infiltration. Its composition affects flexibility, durability, and ease of repair.
Example
The mortar joints of the Colosseum in Rome (80 AD) were mixed with pozzolana — a volcanic ash that gave Roman concrete and mortar exceptional durability.