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Mortar holding weathered bricks. Mortar is a workable paste which hardens to bind building blocks such as stones, bricks, and concrete masonry units, to fill and seal the irregular gaps between them, spread the weight of them evenly, and sometimes to add decorative colours or patterns to masonry walls.
Some mortar joint styles. In masonry, mortar joints are the spaces between bricks, concrete blocks, or glass blocks, that are filled with mortar or grout.If the surface of the masonry remains unplastered, the joints contribute significantly to the appearance of the masonry. [1]
A mason laying a brick on top of the mortar Bridge over the Isábena river in the Monastery of Santa María de Obarra, masonry construction with stones. Masonry is the craft of building a structure with brick, stone, or similar material, including mortar plastering which are often laid in, bound, and pasted together by mortar.
German masons repointing a wall in 1948. Repointing is the process of renewing the pointing, which is the external part of mortar joints, in masonry construction. Over time, weathering and decay cause voids in the joints between masonry units, usually in bricks, allowing the undesirable entrance of water.
Concrete is distinct from mortar. [8] Whereas concrete is itself a building material, mortar is a bonding agent that typically holds bricks, tiles and other masonry units together. [9] Grout is another material associated with concrete and cement.
Originally, and in later poorly constructed walls, the rubble was not consolidated. Later, mortar and cement were used to consolidate the core rubble and produce sturdier construction. Modern masonry still uses core and veneer walls; however, the core is now generally concrete block instead of rubble, and moisture barriers are included. [2]