Technical Analysis of High Pressure Water Jet Removal Method Marking Removal With the development of society, when selecting the road marking removal method, the relevant departments have gone from simply considering the economy to comprehensively considering the impact on road traffic, as well as the safety and environmental protection requirements of construction personnel. According to different actual conditions, select appropriate marking removal technology and formulate reasonable construction scheme. The following table is a comparative analysis of the main advantages and disadvantages of various marking removal technologies. Road marking plays an irreplaceable role in maintaining road traffic order and ensuring road traffic safety. Along with the change of the traffic control scheme, there must be the clearing of the original road markings. At present, the marking removal technology is improving in the direction of environmental protection, high efficiency and automation. The cleaned road surface not only has no residue of any marking paint, but also will not have any damage. The whole road surface will become very clean. The ordinary small high-pressure water jet cleaning machine will produce a large amount of waste water during the cleaning operation, which may cause unsanitary pavement or damage the pavement materials by penetrating into the asphalt pores.

1. With the enhancement of environmental protection awareness in various countries, the requirements of marking removal on environmental protection are becoming higher and higher, so the high-pressure water jet marking removal method came into being, becoming a marking cleaning method favored by European and American countries in recent years. Its main construction machinery is high-pressure water jet marking cleaning machine. The cleaning machine uses the pressurization system to make water shoot out from the nozzle. This water jet has extremely strong impact and cutting force, and can directly penetrate into the asphalt pores to remove the marking paint.

2. The cleaned road surface is not only free from any residue of marking paint, but also free from any damage. The whole road surface will become very clean. The ordinary small high-pressure water jet cleaning machine will produce a large amount of waste water during the cleaning operation, which may cause unsanitary pavement or damage the pavement materials by penetrating into the asphalt pores. Therefore, corresponding cleaning equipment should be equipped during the cleaning process. The washed road surface not only has no residue of any marking paint, but also will not have any damage. The whole road surface will become very clean.

3. Water jet cleaning is a wet sandblasting technology. We know that in dry sandblasting using sandblasting machines, the most common form of jet leaving the nozzle is cylindrical jet. This type of jet carries the jet energy most effectively, but its effective strike area on the target surface is also the smallest.

4. Conduct large-area cleaning. By changing the shape of the nozzle, there is a fan-shaped jet, which is characterized by the jet impinging on the target in the form of a line. With the displacement of the nozzle, a wide cleaning belt appears. Recently, there have been some nozzles with different shapes, such as cone and triangle. Rectangle, etc., are collectively referred to as special-shaped nozzles.

5. Since the medium of jet is no longer limited to water, it should be strictly defined as liquid jet. If you cut foods containing sugar, water will easily dissolve sugar and destroy these foods. To avoid this defect, vegetable oil or other edible oil should be used as the medium for foods such as cut cakes and chocolates.

6. Emulsion is also required as medium in some jet applications. However, we generally say that water jet does not affect the existence of other liquid jets. The actual water jet can be divided into three types: continuous jet, pulse jet and cavitation jet. The use of garnet sand blasting abrasive can be more rapid and effective because of its high hardness, abrasion resistance and sharp corners. After adding garnet sandblasting abrasives to the water jet, not only the water pressure can be reduced, but also the friction force can be greatly increased. The effect will be better. Second, green and environment-friendly construction is convenient.

7. With the use of high-pressure water jet cleaning technology and the addition of garnet sandblasting abrasives, not only can the construction be carried out at any time without the influence of time, but now with the development of technology, there are also good equipment that can be moved easily. Green environmental protection changes at any time to achieve a variety of cleaning purposes.