Road shot blasting machine is an ideal choice for preventive maintenance of asphalt pavement, which can efficiently improve the anti-skid performance of the pavement, extend the service life, and has fast construction, low cost, and good environmental protection.
Faced with the safety risks of driving on rainy days and the accumulation of minor road defects, the road shot blasting machine uses high-speed steel shot to impact the road surface, effectively removing attachments such as oil spills, marking residues, tire rubber marks, etc., while roughening the surface to increase roughness. This process not only significantly improves the friction coefficient (BPN value can be increased from 55 to over 78), but also exposes subtle cracks, providing a good foundation for subsequent waterproof layer construction and truly achieving the maintenance goal of "treating minor diseases and preventing major diseases".
Compared with traditional milling and re paving, the cost of shot blasting construction per lane kilometer is only 43000 yuan, which is 85% lower than traditional technology; At the same time, it reduces waste emissions by about 145 tons and carbon emissions by 95%, which is more in line with the trend of green maintenance. The construction process is also extremely efficient, using an integrated operation chain of "shot blasting vacuum cleaning detection", with a dust recovery rate of over 98% and a 75% reduction in the total road occupation time, greatly reducing the impact on traffic. In addition, this technology has been successfully applied in practical projects such as Hunan Changyi Expressway, becoming a new benchmark for refined maintenance of domestic highways. Whether it is roughening and anti-skid at urban road intersections or removing glue and lines from airport runways, shot blasting machines demonstrate strong adaptability and reliability.
