China's current asphalt pavement maintenance technical specifications usually divide the maintenance and repair operations of asphalt pavement into four categories: maintenance minor repair, medium repair, overhaul, and reconstruction, according to the scale of engineering quantity and the difficulty of technology:
"Dagang pavement maintenance vehicle in Xi'an Municipal Road"
First, minor repair and maintenance
1, maintenance
1.1 Gravel gravel pavement, sweeping sand, adding surface sand, sprinkling wet, smoothing waves, repairing ruts, repairing wear layer.
1.2 Treatment of asphalt roads with oil, clumps, cracks, loose and other diseases.
1.3 Daily cleaning of cement concrete pavement, filling and plugging cracks.
2, minor repair
2.1 Local treatment of the grouting deformation of the gravel road, adding stable materials.
2.2 Gravel gravel pavement repair pit, settlement, the whole section repair wear layer or sweep sand.
2.3 Asphalt pavement repair pits, subsidence, treatment of waves, local cracks, subsidence, treatment of waves, local cracks and other diseases.
"Dagang pavement maintenance vehicle in Haikou"
For such road maintenance projects, it can be completed by means of sweeping vehicles, filling machines, maintenance vehicles, etc. For example, asphalt pavement maintenance vehicles independently developed by Dagang Road Machine:
*High heating efficiency, energy saving and environmental protection
* Heating the mixture during driving to improve work efficiency
*Fume and heat transfer oil mixed heating and insulation structure, heating evenly, no dead angle
* Can complete the entire road pit repair process
*With asphalt heating and spraying system
"Dagang Synchronous Sealing Car in Northern Shaanxi"
Second, the middle repair project
1. The sand pavement is treated to grout and the cross slope is increased.
2. The local section of the gravel pavement is thickened, widened, and the road arch is adjusted to cover the wear layer to deal with serious diseases.
3, the entire section of the asphalt pavement cover.
4. Treatment of serious diseases on asphalt pavement.
5. Treatment of serious diseases on cement concrete pavement.
6, the entire section of the cement concrete pavement joint material replacement.
7, the entire installation, replace the curb
8. Renovation of the bridgehead or transitional pavement.
"Dagang Synchronous Sealing Car in Namibia"
For this kind of road maintenance engineering, it can be completed by synchronous sealing layer, slurry sealing layer, spreading and spreading machine, milling machine and other equipment.
The asphalt gravel synchronous sealer from Dagang Road uses more than a dozen company-specific technologies (13 applications for patent protection, including two international patents), and is also the industry standard setter for such equipment:
*Unique spraying system realizes three overlapping and precise spraying of asphalt;
* sprinkling (spreading) cloth volume is not affected by the speed of the vehicle;
*The weight of the combined silo is reasonable;
* Perfect asphalt system to meet various asphalt spraying needs;
* Heating and circulation system ensures smooth pipe and nozzle;
* No need for diesel cleaning, energy saving and environmental protection;
*A variety of sprinkling (sprinkling) cloth operations can be done in the cab.
"Dagang cold recycling machine in Sichuan"
Third, overhaul project
1. Improve the dirt road with stable materials throughout.
2. The entire section is widened, thickened or overhauled to resurfacing gravel pavement.
3, refurbishment or reinforcement of the resurfacing pavement, simple pavement.
4, reinforcement, resurfacing or widening pavement, simple pavement.
"Dagang cold recycling machine and powder spreader are jointly constructed in mountainous roads"
For such road maintenance projects, it can be done by means of cold recycling machine, powder spreader, milling machine and other equipment.
The cold recycling machine independently developed by Dagang can continuously complete the cold milling of the asphalt pavement on site in the natural environment temperature, crushing and adding the emulsified asphalt or foamed asphalt, water and other materials to regenerate the asphalt pavement. Milling, crushing, adding, mixing, paving, and equalization of materials. It is a special equipment for realizing the regeneration of old asphalt pavement.
"Dagang sprinkle paving machine in Hainan"
Fourth, reconstruction project
1. The whole section of the whole line will improve the technical grade of the road, paving the pavement, and paving the pavement easily.
2, new paved gravel pavement.
After the cement concrete pavement is treated, it is strengthened or changed to asphalt concrete pavement.
"Dagang sprinkle paving machine in Heilongjiang"
For this type of pavement maintenance project, it can also be completed by synchronous sealing, slurry sealing, spreading and paving machine, milling machine and other equipment.
Dagang GT750 sprinkle paving machine is a special construction equipment for the latest technology of high-grade pavement preventive maintenance in the world. It can carry out new ultra-thin layer construction and complete all functions of paver:
*The spraying system has strong self-cleaning ability, and solves the blockage of the asphalt spray pipe caused by the construction interval.
* Accurate measurement and convenient operation, meeting different construction requirements such as sealing layer, adhesive layer asphalt spreading amount and asphalt mixture paving thickness
* Fully hydraulic variable track walking system, fast walking and stable paving
* Unique spiral system and screed design, good anti-segregation effect
*Asphalt rapid heating, pulsed spraying, large adjustment range
Xi'an Dagang Road Machine "China Creation and Assembly Base"
For more than 30 years, as a leader in the road construction and maintenance industry, Dagang Road has been providing users with a full set of high-tech, high-reliability road-building machinery and equipment, setting up rapid construction in the construction and maintenance of asphalt roads in China and foreign countries. And the perfect quality brand image.
