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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.
Settlement cracks usually show up as vertical lines or hairline cracks (small cracks that are under 1/10 of an inch or 2.5 millimeters wide), especially around weak spots like doors, windows, and ...
Mortar joints in brickwork take up a considerable large amount of a wall's surface area and have a significant influence on the wall's overall appearance. Some joint profiles accentuate their individual designs, while others merge the bricks and mortar to form a flush, homogeneous surface.
Even should this operation fail to produce an absolutely continuous damp-proof course in the wall - which depends on the structure of the mortar and the bricks - it is nevertheless in practice found that in all cases the hot wall absorbs sufficient of the material to prevent the rise of ground moisture.
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.
A wall system needs a balance between the mortar and brick that allows the mortar to be the weak part of the unit. When mortar is stronger than the brick, it prevents any natural movement in the wall and the faces of the brick will begin to deteriorate, a process known as spalling , the process by which the outer face of a brick degrades and ...
In masonry, sulfates produced by the oxidation of pyrite in clay materials can be present in bricks. They are gradually released over a long period of time, causing sulfate attack of mortar, especially where moisture movement concentrates the sulfates. [4] Seawater: sulfate is the second anion present in seawater after chloride.
Real exposed brick walls sound cool in theory, but they're actually a lot of work.
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