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Hydrodemolition (also known as hydro demolition, hydroblasting, hydro blasting, hydromilling, waterblasting, and waterjetting) is a concrete removal technique which utilizes high-pressure water, often containing an abrasive material, to remove deteriorated and sound concrete as well as asphalt and grout. This process provides an excellent ...
A variant of wet blasting is vapor blasting (or vapour blasting in British English). In this process pressurized air is added to the water in the nozzle producing a high-speed mist, called "vapor". This process is even milder than wet blasting, allowing mating surfaces to be cleaned while retaining their ability to mate.
Waterblasting or water blasting may refer to: Hydrocleaning, the use of high pressure water for cleaning; Hydrodemolition, the use of high pressure water to remove ...
Drilling and blasting is the controlled use of explosives and other methods, such as gas pressure blasting pyrotechnics, to break rock for excavation. It is practiced most often in mining , quarrying and civil engineering such as dam , tunnel or road construction.
Gold miners excavate an eroded bluff with jets of water at a placer mine in Dutch Flat, California sometime between 1857 and 1870.. The modern form of hydraulic mining, using jets of water directed under very high pressure through hoses and nozzles at gold-bearing upland paleogravels, was first used by Edward Matteson near Nevada City, California in 1853 during the California Gold Rush. [3]
Water gel explosives are frequently used as cartridge explosives because they are much easier to load into large casings. With water gel explosives, the slurry material can simply be poured into the casing. Traditional explosives are cast into the casing. This process is laborious and the charge may begin to shrink, creating multiple voids.