Building and construction
Mud plastered home in Pakistan
construction industry, mud is a semi-fluid material that can be used to coat, seal, or adhere materials. Depending on the composition of the mud, it can be referred by many different names, including
clay, and many other names are historically used synonymously to mean a mixture of
subsoil and water possibly with the addition of stones, gravel, straw, lime, and/or bitumen. This material was used a variety of ways to build walls, roofs and floors.
Mud house in Amran,
Mud can be made into mud bricks, also called
adobe, by mixing mud with water, placing the mixture into
moulds and then allowing it to dry in open air.
 Straw is sometimes used as a binder within the bricks, as it adds a support lattice. When the brick would otherwise break, the straw will redistribute the force throughout the brick, decreasing the chance of breakage.
 Such buildings must be protected from groundwater, usually by building upon a masonry, fired brick, rock or rubble foundation, and also from wind-driven rain in damp climates, usually by deep roof overhangs. In extremely dry climates a well drained flat roof may be protected with a well-prepared (
puddled) and properly maintained dried mud coating, viable as the mud will expand when moistened and so become more water resistant.
 Adobe mudbricks were commonly used by the
Pueblo Indians to build their homes and other necessary structures.
Mud that is mostly clay, or a mixture of clay and sand may be used for
ceramics, of which one form is the common fired
brick. Fired brick are more durable but consume much more energy to produce.
Stabilized mud (earth, soil) is mud which has had a binder such as cement or bitumen added. Examples are
mudcrete, landcrete, and