A pair of muddy boots

Mud is a liquid or semi-liquid mixture of water and any combination of different kinds of soil (loam, silt, and clay). It usually forms after rainfall or near water sources. Ancient mud deposits harden over geological time to form sedimentary rock such as shale or mudstone (generally called lutites). When geological deposits of mud are formed in estuaries, the resultant layers are termed bay muds.

Building and construction

Mud plastered home in Pakistan
Arg e Bam, One of The largest adobe and mud building in the world.[1]


In the 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 slurry, mortar, plaster, stucco, and concrete.


Mud, cob, adobe, 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, floors and even roofs. For thousands of years it was common in most parts of the world to build walls using mudbricks or the wattle and daub, rammed earth or cob techniques and cover the surfaces with earthen plaster.


Mud house in Amran, Yemen

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.[2] 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.[3] 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.[4] Adobe mudbricks were commonly used by the Pueblo Indians to build their homes and other necessary structures.

Fired brick

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

Stabilized mud (earth, soil) is mud which has had a binder such as cement or bitumen added. Examples are mudcrete, landcrete, and soil cement.

Other Languages
العربية: وحل
aragonés: Bardo
ܐܪܡܝܐ: ܛܝܢܐ
asturianu: Barro
Aymar aru: Ñiq'i
বাংলা: কাদা
български: Кал
brezhoneg: Bouilhenn
čeština: Bahno
dansk: Mudder
Deutsch: Schlamm
eesti: Muda
emiliàn e rumagnòl: Smèlta
español: Barro
Esperanto: Koto
euskara: Lokatz
فارسی: گل (خاک)
français: Boue
Gaeilge: Láib
한국어: 진흙
հայերեն: Ցեխ
हिन्दी: पंक
hrvatski: Blato (tlo)
Ido: Fango
Bahasa Indonesia: Lumpur
italiano: Fango
עברית: בוץ
Basa Jawa: Blethok
ಕನ್ನಡ: ಕೆಸರು
Kiswahili: Matope
Kreyòl ayisyen: Labou
latviešu: Dubļi
lumbaart: Palta
magyar: Iszap
македонски: Кал
മലയാളം: ചളി
Bahasa Melayu: Lumpur
Mìng-dĕ̤ng-ngṳ̄: Tù-muòi-ciŏng
Nāhuatl: Zoquitl
Nederlands: Modder
Napulitano: Lota
нохчийн: Хатт
norsk nynorsk: Søle
occitan: Fanga
português: Lama
română: Nămol
Runa Simi: T'uru
русский: Грязь
Simple English: Mud
ślůnski: Ćaplyta
کوردی: قوڕ
српски / srpski: Муљ
srpskohrvatski / српскохрватски: Mulj
Basa Sunda: Leutak
suomi: Liete
Tagalog: Putik
Türkçe: Çamur
удмурт: Дэри
українська: Бруд
Tiếng Việt: Bùn
ייִדיש: מאראסט
žemaitėška: Porvs