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Pressure washing

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+#REDIRECT [[Pressure washing]]
-'''Hydrocleaning''', '''high pressure cleaning''' or '''waterblasting''' is the use of water propelled at high speeds to clean surfaces and materials. By focusing and pressurizing the water stream, the force generated can remove, for example:
+{{short description|Use of a water jet for cleaning hard surfaces}}
-[[Image:Hydrocleaning-rubber-removal.jpg‎|right|Rubber removed from runway using ultrahigh pressure water]]
-*Paint from walls, metal, and highways
-*Rubber from runways ([[airfield rubber removal]])
-*Sealants and membranes from concrete
-*Gum from side walks
+[[Category:Cleaning methods]]
-==Pressures==
-In order to standardize cleaning operations and surface preparation specifications the Steel Structures Painting Council (SSPC) has adopted the following four definitions for cleaning operations using water jetting technology:
-*Low-pressure water cleaning (LP WC) is the use of water pressure less than 5,000&nbsp;psi (34 MPa) for cleaning.
-*High-pressure water cleaning (HP WC) is the use of water pressure between 5,000 to 10,000&nbsp;psi (34 to 70 MPa) for cleaning.
-*High-pressure water jetting (HP WJ) is the use of water pressure between 10,000 to 25,000&nbsp;psi (70 to 170 MPa) for cleaning.
-*Ultrahigh-pressure water jetting is the use of pressures above 25,000&nbsp;(170 MPa) for cleaning.
-==Applications==
-===Surface preparation===
-Any time a hard surface, such as asphalt, concrete or metal, needs to have a coating applied, the surface must first be prepared. The use of high pressure and ultra high pressure water has been used to prepare various surfaces for the purpose of repair and reapplication of such coatings. Coatings are used to protect concrete from the elements, rain, salt, and to create a friendlier surface for human use. Concrete can also be covered with carpet or tiles using a heavy duty glue or mastic. Asphalt and concrete can be painted to communicate acceptable travel patterns, potential hazards, or for aesthetics. High pressure water can be used to clean these materials off when new ones are desired.
-[[Image:Shredded-membrane-hydrocleaning.jpg‎|right|Partially shredded membrane from a hydrocleaning surface preparation job.]]
-High pressure water has been used to remove:
-*Membranes:
-**Elastomeric
-**Rubber
-**Urethane
-**Hot applied
-*Paint from:
-**Highways
-**Runways
-**Parking structures
-**Metal surfaces
-===Airfield rubber removal===
-Commercial and military airports are required to keep certain levels of friction on the [[Runway|landing strips]] in order to prevent planes from skidding off. Runway design, weather and amount of rubber on the runway all play a role in the level of friction of a landing strip. If too much rubber is present, especially in rainy weather, the friction of the landing strip will be lower requiring more distance for the plane to land. High pressure water can be used to remove rubber left from airplane tires and restore required friction levels. The level of use, number of landings, determines how often each runway needs to be cleaned. This process of removal is sometimes known as [[Airfield rubber removal]].
-===General surface cleaning===
-High pressure water can be used to clean a multitude of surfaces dirtied by gum, pollution or [[graffiti]].
-==See also==
-* [[Abrasive blasting]]
-* [[Pressure washer]]
-==References==
-* Steel Structures Painting Council.(1995). ''Surface Preparation and Cleaning of Steel and Other Hard Materials by High- and Ultrahigh-Pressure Water Jetting Prior to Recoating.'' Pittsburgh, PA. SSPC
-* U.S. Water Jet Technology Association, ''Recommended Practices for the Use of Manually Operated High-Pressure Water Jetting Equipment'', St.Louis, MO: US Water Jet Technology Association, 1987
-* Momber, A.W.: Hydroblasting and Coating of Steel Structures, Elsevier Applied Sciences, London, 2003
-* Momber, A.W.: Hydrodemolition of Concrete Substrates and Reinforced Concrete Structures. Elsevier Applied Science, London, 2005
-==External links==
-*[http://www.technicalservicesmidatlantic.com/membranecoating.html More about membrane and Coating Removal]
-*[http://hi-lite.com/us/en/runway-rubber-removal/hydro-blasting Hydro Runway Rubber Removal]
-*[http://hi-lite.com/us/en/runway-rubber-removal/chemical-process Chemical Runway Rubber Removal]
-*Hydrocleaning most commonly referred to as [http://pressurewashingsydney.com.au/ Pressure Cleaning] To Remove Moss Growth or Oil Stains
-*[http://mac10.umc.pitt.edu/u/FMPro?-db=ustory&-lay=a&-format=d.html&storyid=7446&-Find Surface cleaning of the Cathedral of Learning]
-*[http://sydneywidepressurecleaning.com.au/High-Pressure-Cleaning Hydrocleaning High Pressure Cleaning Technique]
-*[http://www.jettingsystems.co.uk/runway-rubber-cleaning Details of Rubber removal and Videos of Runway Rubber removal in action]
-*[http://www.jettingsystems.co.uk/sewer-cleaning/ Sewer Cleaning heads and equipment - Hydrocleaning and Water Jetting]
-Tips for Choosing a hydrocleaning or [http://highpressurecleaningsydney.net.au/Tips-for-Choosing-a-Pressure-Cleaning-Contractor.php Pressure Cleaning] Contractor
-[[Category:Cleaning]]
-[[ru:Гидроструйная очистка]]