In the field of modern highway, municipal road maintenance and new construction, slurry sealing vehicle is an indispensable core special equipment.It relies on automatic control system, accurately proportioning aggregate, emulsified asphalt, mineral powder, water and special additives, continuously stirring and uniformly paving to form ultra-thin dense asphalt slurry seal layer. With the advantages of high efficiency, minimally invasive and low cost construction, it becomes the key equipment for road preventive maintenance, disease repair and pavement optimization, and is widely suitable for the construction of various grades of highways, municipal roads and special traffic pavement projects.

Core Foundation: Pavement Preventive Maintenance Protection

Preventive maintenance is the core and most common use of slurry sealing vehicles, and it is also a key means to prolong the service life of roads and reduce maintenance costs.After long-term rolling by vehicles, rain washing and sun weathering, hidden diseases such as fine cracks, loose surface layer, reduced anti-skid performance and surface water seepage will gradually appear on the road surface. If not treated in time, they will rapidly develop into serious diseases such as pits, subsidence and large-area cracks, which will greatly shorten the service life of the road.
Slurry sealing vehicle can pave 3- 13mm ultra-thin slurry sealing layer without destroying the original pavement structure.The formed sealing layer has dense structure and strong integrity, which can perfectly block fine pores and hair cracks of the pavement, completely block rainwater and groundwater from penetrating into the pavement base layer, and effectively avoid softening, loosening and damage of the base layer.At the same time, the brand-new aggregate asphalt mixture surface layer can significantly restore the wear resistance of the pavement, delay the aging of the pavement, aggregate shedding, surface wear and other problems, avoid all kinds of pavement diseases from the source, make the old pavement realize the effect of "renovation and quality improvement", and greatly extend the service life of the road for 3-5 years.

Precision repair: treatment of common road diseases

For all kinds of shallow pavement diseases in road operation, slurry sealing vehicle can realize rapid and accurate repair, without large-area milling and resurfacing, effectively solve hidden dangers of pavement traffic, and adapt to most conventional pavement damage scenarios.
First, repair the road surface light rut.Urban trunk roads, expressway ramps, bus lanes and other sections are subject to vehicle braking and rolling for a long time, so shallow rutting and uneven road surface are easy to occur. Slurry sealing vehicles can accurately level rutting grooves, restore road flatness and eliminate hidden dangers of vehicle running bumps and skidding through micro-surface construction technology.Second, deal with loose, peeling and pockmarked surface diseases of pavement surface, reconstruct complete and compact pavement surface structure, and strengthen pavement integrity.Third, repair local shallow cracks and surface damage. Compared with traditional manual repair, the construction uniformity is better, the degree of adhesion is higher, and the road surface is not easy to crack again after repair, and the durability is stronger.
Compared with the traditional overhaul process, the disease repair of this equipment belongs to minimally invasive construction, which only aims at the rectification of road surface problems, does not damage the main structure of the road, and greatly reduces construction materials and construction period.

Supporting works: construction of functional layer of newly-built pavement

Slurry sealing vehicle is not only used for road maintenance, but also an important supporting equipment for new asphalt pavement construction. It is mainly responsible for the standardized construction of upper and lower sealing layers of pavement to ensure the construction quality and later stability of new roads.
in that newly-built highway project, it can complete the construction of the seal layer unde the asphalt pavement, construct a waterproof bonding transition layer between the base layer and the surface lay, enhance the bonding strength between the base layer and the asphalt surface layer, avoid separation and sliding between the layers, and simultaneously block the upward penetration of moisture in the base layer to prevent the asphalt surface layer from bulging and cracking.At the same time, it can construct the upper sealing layer of the pavement, optimize the compactness of the surface layer of the new pavement, improve the overall waterproof, wear resistance and aging resistance of the pavement, make up for the fine construction defects of the surface layer of the new pavement, and further improve the quality standard of the road engineering.The construction technology is suitable for various new asphalt pavement projects such as expressways, urban and rural trunk highways, municipal urban roads, etc., and the construction accuracy and efficiency are far superior to traditional manual paving methods.

Scenario expansion: special optimization construction of special pavement

Relying on the advantages of flexible adaptation, rapid prototyping and rapid opening to traffic, the slurry sealing vehicle can meet the pavement construction requirements of various special scenarios with strong adaptability.In urban trunk roads, ring expressways and expressways with large traffic volume and high traffic pressure, the equipment can realize rapid mechanized construction, and the traffic can be opened within hours after construction, greatly shortening the construction time of occupied roads, minimizing the impact of traffic congestion, and solving the pain points of long maintenance period and serious disturbance of traditional roads.
At the same time, the equipment can adapt to the maintenance and renovation of special roads such as airport liaison roads, parking lots, service areas, factory roads, rural roads, etc.According to the characteristics of uneven traffic load, easy wear and easy ponding of this kind of pavement, the slurry sealing layer construction is used to improve the anti-skid performance, drainage performance and wear resistance of the pavement, so as to ensure the traffic safety.In addition, the slurry sealing vehicle equipped with fiber construction system can also carry out fiber slurry sealing and fiber micro-surface construction, further strengthen the tensile and crack resistance of the sealing layer, and meet the pavement construction requirements of heavy-duty sections and high temperature and rainy areas.

Construction core advantages and industry values

The reason why slurry sealing vehicle has become the mainstream equipment of road maintenance lies in its remarkable construction advantages.First, the degree of automation is high. The equipment can automatically complete the entire process of raw material proportioning, mixing, and paving. The proportioning is accurate, the paving is uniform, and the construction quality is stable and controllable, effectively avoiding the problems of uneven thickness and unbalanced proportioning in manual construction.Second, the mode of outstanding economy, preventive maintenance + minimally invasive repair can save more than 40% of maintenance cost compared with road overhaul and reconstruction, and the cost performance is extremely high.Third, environmental protection and energy saving, no waste, low dust, low noise in the construction process, high utilization rate of raw materials, meeting the requirements of green road construction.
From the perspective of the industry, the slurry sealing vehicle has built a modern road maintenance system of "prevention first and minimally invasive repair", changed the traditional extensive maintenance mode of "repair after failure and overhaul", realized fine, efficient and low cost road maintenance, and is the core equipment to ensure the traffic quality of the national road network, prolong the service cycle of the road and reduce the cost of traffic operation and maintenance.

epilogue

Whether it is the construction of functional layer of new road, preventive maintenance of in-service road, rapid repair of various shallow diseases, optimization of pavement in special scenes, slurry sealing vehicle plays an irreplaceable role.With its core advantages of multi-function, high efficiency, low cost and high quality, it has run through the construction and maintenance links of the whole life cycle of roads, becoming a "road maintenance guard" for ensuring road safety and improving road network quality in the field of highway traffic and municipal engineering.