Can road marking removal be performed with a shot blasting machine?
Due to changes in traffic management plans and other factors, existing road markings often need to be removed. If the existing markings are not completely removed, drivers can easily mistakenly believe the old markings are still present under nighttime lighting or in humid conditions, misleading them and significantly impacting driving safety and traffic control. On the other hand, while some road marking removal methods can completely remove the markings, they can also damage the road surface, affecting the road's appearance and increasing road maintenance costs. Considering the varying impacts on traffic, time required, and environmental impacts of different road marking removal methods, choosing the appropriate method is crucial.
The working principle of a road marking shot blasting machine is as follows: a motor drives the impeller to rotate. Using centrifugal force, the shot blaster propels shot (steel or sand) at a high speed and angle onto the work surface. The shot impacts the surface, and then, through the airflow of a vacuum cleaner inside the machine, the shot is separated from the removed impurities and dust, and the recovered shot is recycled for repeated blasting to achieve the desired cleaning effect. During shot blasting, the shot size and shape of the shot are controlled, along with the machine's speed and velocity. This allows for varying shot intensities and surface treatment effects.
Shot blasting machines are categorized by their travel mode: push-type, vehicle-mounted, and mobile. Shot blasting is primarily used for cleaning road markings on cement concrete pavements, and is particularly well-suited for cleaning road markings at room temperature.
Shot blasting improves the friction coefficient of the road surface, improving driving safety. Furthermore, the cleaning process does not generate significant dust, making it particularly suitable for removing old markings near sidewalks on urban roads.