Asphalt melting equipment manufacturers share several methods for heating bitumen

In our daily life, we can often see emulsified asphalt equipment. Its appearance has brought us great convenience. So what is the difference between its modification process? Below, the editor will give you a brief introduction to the relevant knowledge points.
1. Emulsified asphalt equipment first emulsifies and then modifies: This is a relatively simple way to make modified emulsified asphalt. The production process is to grind hot asphalt and emulsifier soap together through a colloid mill to make ordinary emulsified asphalt, and then add latex-like modifiers to the emulsified asphalt through mechanical stirring to make modified emulsified asphalt. The characteristic of this method is that it does not require high equipment.

Synchronized gravel sealing is to use special equipment, namely a synchronous gravel sealing truck and bonding materials (modified asphalt or modified emulsified asphalt) to be spread simultaneously on the road surface, and then formed into a single layer through natural traffic rolling or tire roller rolling. A layer of asphalt gravel wearing layer, which is mainly used as the surface layer of the road, and can also be used for the surface layer construction of low-grade highways.

Fine-grained asphalt road is a type of road surface constructed using fine-grained asphalt mixtures.
I. Material Composition
Asphalt Binder: Typically, road petroleum asphalt or modified asphalt conforming to relevant standards is selected. For general urban roads and highways, No. 70 or No. 90 road petroleum asphalt is commonly used; in some special sections, such as heavy-duty traffic roads or roads in high-temperature areas, modified asphalt may be used to improve pavement performance.
The quality of the asphalt directly affects the pavement’s durability, aging resistance, and crack resistance. High-quality asphalt should have appropriate viscosity, softening point, and ductility, maintaining good performance under different climatic conditions.
Fine Aggregate: Generally, natural sand, manufactured sand, or stone chips are used. The particle shape, gradation, and mud content of the fine aggregate have a significant impact on the performance of the asphalt mixture.
The particle shape should be as close to cubic as possible to improve the stability and density of the mixture. The gradation should meet design requirements. A reasonable gradation allows fine aggregates to form a good interlocking structure in the mixture, improving pavement strength and durability. The mud content should be strictly controlled within the specified range; excessive mud content will reduce the adhesion between asphalt and aggregates, affecting pavement quality.
Coarse Aggregate: Commonly used coarse aggregates include crushed stone and crushed gravel. The strength, hardness, and abrasion resistance of coarse aggregates are key indicators and should meet certain technical requirements to ensure the pavement can withstand vehicle loads and wear during use.
Its particle size is generally above 4.75mm, playing a skeletal supporting role in the asphalt mixture. A reasonable coarse aggregate gradation can increase pavement stability and load-bearing capacity.

1. Emulsion Batching System: Automatic temperature control, manual weighing and batching, equipped with a timed agitator and a residual material vent.
2. Asphalt Batching System: Automatic temperature control, equipped with a timed agitator and a residual material vent.
3. Production System: Manually adjust the metering pump speed according to the set recipe to achieve ratio adjustment. The asphalt pipeline and pump use electric heating for automatic temperature control.
4. Sampling: Sampling is required during production for observation and related testing.
5. Finished Product System: Optional direct or cooled discharge is available. Finished product tanks are provided for pumping the finished product into the tanks.
6. Control System: The control system consists of intelligent temperature sensors, instruments, and conventional electrical appliances for easy inspection and maintenance.
7. Energy-Saving System: During the emulsified asphalt enters the finished product, a heat exchanger is used to dissipate excess heat to heat the water.

I. Overview of the Asphalt Drum Turner
Asphalt drum turners are commonly used in asphalt production lines. Their function is to invert drums filled with asphalt to pour the asphalt for subsequent production and processing. The working principle of an asphalt drum turner is very simple; let’s take a closer look.
II. Working Principle of an Asphalt Drum Turner
Asphalt drum turners use a mechanical device to tilt and flip the drums containing asphalt, allowing the asphalt to flow out into storage tanks or onto conveyor belts. Specifically, the working steps are as follows:
1. Place the drum containing asphalt on the drum turner’s workbench.
2. Once the drum begins, the mechanical arm clamps the drum, lifts it, and then tilts it to a certain angle.
3. The tilt angle is gradually increased. When the drum reaches a certain level, the asphalt will flow out into the storage tank or conveyor belt below.
4. After the asphalt flows out, the robotic arm flips the barrel, releasing any remaining asphalt.
5. After the tilting and flipping operations are complete, the robotic arm returns the barrel to its original position.
III. Advantages of the Asphalt Drum Turner
The asphalt drum turner utilizes advanced mechanical technology to effectively improve production efficiency and reduce labor intensity and time costs. Furthermore, its tilting and flipping operations ensure sufficient asphalt flow, avoiding waste, improving resource utilization, and reducing production costs.
Overall, the asphalt drum turner is an indispensable piece of equipment in an asphalt production line. Its advanced technology and simple, easy-to-use operating principle provide strong support for asphalt production.

Bitumen decanter equipment can be placed in a complex system as an independent unit, replacing the existing heat source de-barreling method, or in parallel as a core component of a large set of equipment, or it can work independently to meet the requirements of small-scale construction operations.
The Sinoroader bitumen decanter device is mainly composed of a de-barreling box, a lifting mechanism, a hydraulic thruster and an electrical control system. The box is divided into two chambers, the upper chamber is a barreled bitumen melting chamber, and heating coils are evenly distributed around it. The heating pipe and the bitumen barrel mainly exchange heat in a radiation manner to achieve the purpose of bitumen de-barreling. Several guide rails are the tracks for the bitumen barrel to enter. The lower chamber is mainly to continue heating the bitumen removed from the barrel to make the temperature reach the suction pump temperature (100℃), and then the asphalt pump is pumped into the upper chamber. At the same time, an empty barrel is pushed out at the rear end outlet. There is also an oil tank on the platform at the entrance of the asphalt barrel to prevent the dripping bitumen from flowing out.
The inlet and outlet doors of the device adopt a spring automatic closing mechanism. The door can be automatically closed after the asphalt barrel is pushed in or out to reduce heat loss. A temperature gauge is installed at the asphalt outlet to observe the asphalt outlet temperature. The electrical control system can control the opening and closing of the hydraulic pump and the reversing of the electromagnetic reversing valve to realize the advance and retreat of the hydraulic cylinder. If the heating time is extended, a higher temperature can be obtained. The lifting mechanism adopts a cantilever structure. The bitumen barrel is lifted by an electric hoist, and then moved horizontally to place the bitumen barrel on the guide rail. A temperature gauge is installed at the outlet of the asphalt meltering equipment to observe its outlet temperature.

Synchronous gravel sealer fog sealer is a method of road maintenance. Some roads have network cracks, cracks and holes after a few years of use. The effective method is fog seal technology. The cost is very low. After the fog seal, due to the large fluidity of the material, it can penetrate into the aggregate and flow into the cracks to “transfuse” the road surface, restore the asphalt adhesion of the road surface, fill small cracks and gaps, prevent water from penetrating the road surface, and keep the road surface performance for 2 to 3 years, delaying the high maintenance cost and improving the economic benefits.

During the road construction process, asphalt spreaders also play an irreplaceable role. Let’s take a look at the main performance advantages of asphalt spreaders produced by Sinoroader and where their main contributions exist?
1. Manual/automatic control of spraying volume and working width. Each nozzle can be controlled individually, and the determinant nozzles can be freely combined to adjust the spraying width at will. Spreading control can be performed in the cab or the rear platform.
2. The automatic control system can measure the vehicle speed and automatically calculate the number of revolutions of the asphalt pump according to the input spreading volume, spraying width and asphalt type, and then automatically adjust the number of asphalt pumps through the system.
3. The vehicle-mounted rapid heating system (10-15℃/h) can improve the heating efficiency and reduce the construction auxiliary time and spreading temperature;
4. The flushing nozzle system can blow out the remaining asphalt in the nozzle through diesel and high-pressure air to prevent the asphalt from freezing in the nozzle and increase the service life of the nozzle.

The bitumen decanter equipment is mainly composed of barrel removal shell (BOX), hoisting mechanism, hydraulic booster and electrical control system. The shell is divided into two chambers, the left and right chambers. The upper chamber is a chamber for melting a large barrel of bitumen (definition: the transformation process of a substance from solid to liquid). There are heating coils evenly distributed around it.

Emulsified asphalt equipment hot-melts basic colored asphalt and mechanically distributes tiny colored asphalt particles in an aqueous solution containing emulsifier to form a liquid colored asphalt material. The cement emulsified asphalt equipment mortar used in slab ballastless track construction uses cationic emulsified asphalt equipment. The purpose is to adjust the elasticity, toughness and durability of the cement emulsified asphalt equipment mortar. Polymers are often used to modify the asphalt.

1. Different production processes
Emulsified asphalt and asphalt are both extracted from petroleum, but their production processes are different. Asphalt is separated from crude oil by high-temperature treatment, and then processed through a series of complex processing processes such as distillation and fluidized hydrogenation. Emulsified asphalt, on the other hand, is made by adding an emulsifier, mechanical shearing or ultrasonic “emulsification” reaction, dispersing oil and water to form an emulsion, and then adding an appropriate amount of acid catalyst.
2. Different usage scenarios
Asphalt is suitable for paving in different places such as roads, bridges, airport runways, and parking lots. Emulsified asphalt is particularly suitable for use under more stringent conditions such as deep road repair and bridge deck waterproofing. Because emulsified asphalt produced by emulsification technology has better performance and can better adapt to complex usage environments.
3. Different characteristics
Asphalt is a black, viscous substance with fluffy fibers, a high melting point, high hardness, and easy aging. In comparison, emulsified asphalt is lighter in color, light gray or milky white, with moderate viscosity and uniformity, good adhesion, good water and weather resistance, and not easy to age.
4. Different use effects
Although asphalt works well on the road surface, it also has certain difficulties in construction and maintenance. Emulsified asphalt is more convenient to use and can be easily mixed with other materials during construction, so it is widely popular and has better use effects.
In summary, there are obvious differences between emulsified asphalt and asphalt in production process, usage scenarios, characteristics, and use effects, and appropriate materials need to be selected according to different needs.

I believe that after a long period of contact with asphalt tanks, everyone knows that the working efficiency of emulsified asphalt equipment actually depends on the operator. The more experienced the operator is and the stronger his ability to deal with various emergencies is, the higher the working efficiency will be, and the safety will be guaranteed. Mastering more equipment-related knowledge is what every friend should pursue. Today, the editor will explain to you the details that need to be paid attention to when operating emulsified asphalt equipment:

Emulsified asphalt is to melt the asphalt and disperse it in a water solution containing a certain amount of emulsifier in the form of tiny droplets through the action of emulsifier and machinery to form an oil-in-water asphalt emulsion. This emulsion is in the form of dry liquid at room temperature. Modified emulsified asphalt refers to a modified asphalt mixed emulsion with certain characteristics prepared by blending, mixing and preparing it with emulsified asphalt as the base material and asphalt modification material as the external modification material under a certain process flow. This mixed emulsion is called modified emulsified asphalt.
The modified production process of emulsified asphalt can be divided into four categories:
1. Adding latex modifier after making emulsified asphalt, that is, emulsification first and then modification;
The production process is to grind the hot asphalt and emulsifier soap solution together through colloid mill to make ordinary emulsified asphalt, and then add the latex modifier to the emulsified asphalt through mechanical stirring to make modified emulsified asphalt. The advantage of this method is that it does not require high equipment, and the disadvantage is that it is suitable for latex modifiers.
2. The latex modifier is mixed into the emulsifier aqueous solution, and then it enters the colloid mill together with the asphalt to produce modified emulsified asphalt;
3. The latex modifier, emulsifier aqueous solution, and asphalt are put into the colloid mill at the same time to produce modified emulsified asphalt (the two methods 2 and 3 can be collectively referred to as emulsification and modification);
The modifier is mixed into the emulsifier soap solution, and then the “modified” soap solution and asphalt are put into the colloid mill together to make modified emulsified asphalt; or the modifier is not pre-added to the emulsifier soap solution, but is placed in a tank separately, and finally mixed with the emulsifier, acid, water, etc. in the pumping pipeline and then enters the colloid mill together with the hot asphalt.
The method of adding latex modifier to the soap tank has the advantage that it is exactly the same as the process of producing ordinary emulsified asphalt, and no changes are required to the production equipment; the disadvantage is that when using this method to produce modified emulsified asphalt, the metering of the modifier is subject to certain restrictions, and the modifier latex is required to be able to withstand the pH value of the soap solution. The method of directly connecting the latex modifier to the colloid mill through a pipeline can overcome the above disadvantages, but it requires necessary improvements to the ordinary emulsified asphalt equipment before it can be used for the production of modified emulsified asphalt.
4. Emulsify the modified asphalt to produce emulsified modified asphalt.
The ready-made modified asphalt is heated to a certain temperature, becomes a flowing state, and then enters the colloid mill together with the soap solution to make emulsified modified asphalt. In the entire asphalt production process, due to the high viscosity characteristics of the asphalt itself and the high temperature environment required for production, various high-performance pumps and valves play a vital role in the asphalt transportation process.

The Sinoroader 6-cubic-meter asphalt spreader is a specialized machine used to spread emulsified asphalt, diluted asphalt, hot asphalt, and high-viscosity modified asphalt. It is widely used in the construction of basecoat, waterproofing, and tack coats on high-grade highway asphalt pavements. This spreader consists of a chassis, asphalt tank, asphalt pumping and spraying system, thermal oil heating system, hydraulic system, combustion system, pneumatic system, and operating platform.
The following are important precautions when using an asphalt spreader:
1. Cleaning the asphalt pump and piping: After each operation or when changing construction sites, the asphalt pump and piping must be thoroughly cleaned to ensure proper operation the next time.
2. Checking Valve Positions: Before spraying, ensure that all valves are correctly positioned to ensure construction quality and safety.
3. Asphalt Temperature Control: The hot asphalt added to the asphalt tank must be between 160 and 180°C. If transporting over long distances or operating for extended periods, a heating device can be used for heat preservation, but do not use it as an oil melting furnace. 4. Filling and Transporting Asphalt Tanks: Asphalt tanks should not be overfilled, and the filler cap must be tightly closed to prevent asphalt spillage during transport.
5. Burner Operation Precautions: When using a burner to heat asphalt in the tank, the asphalt level must exceed the burner to ensure safe operation.
Following these guidelines will ensure safe and efficient operation of your asphalt distributor, while also improving construction conditions and protecting the environment.

The heating principle of asphalt decanter equipment is to heat, melt and decanter the asphalt through the heating plate. It is mainly composed of de-barreling box, lifting system, propeller and electrical control system.
The box of asphalt decanter plant is divided into upper and lower chambers. The upper chamber is the asphalt melting chamber, which is densely covered with heat transfer oil heating coils or hot air heating pipes. The asphalt is melted and removed from the barrel by heat. The hoisting hook is installed on the gantry, and a barrel grabber is hung. The asphalt barrel is lifted by the electric winch, and then the asphalt barrel is placed on the guide rail by horizontal movement. Then the propeller pushes the barrel into the upper chamber through two guide rails, and an empty barrel is pushed out at the rear end outlet.
An anti-drip oil tank is provided at the entrance of the asphalt barrel. The asphalt enters the lower chamber of the box and is continuously heated to a temperature of about 100 to be transported, and then pumped into the asphalt tank by the asphalt pump. The lower chamber can also be used as an asphalt heating tank.
The asphalt decanter plant has the characteristics of not being restricted by the construction environment, strong adaptability and extremely low failure rate. If large production is required, multiple units can be assembled.

The difficulty of emulsified bitumen equipment itself, because general bitumen also has different classifications, in the production and processing of emulsified bitumen equipment bitumen concrete, it is necessary to pay attention to whether the common raw materials are the common bitumen and ensure the quality. Check the black antistatic tweezers of emulsified bitumen equipment asphalt concrete machine equipment emulsified bitumen equipment.
If the gap of the black antistatic medical tweezers bitumen concrete micro-powder machine of emulsified bitumen equipment is enlarged after long-term use, then we can adjust it and continue to process it. Emulsified bitumen equipment is a relatively simple difficulty.

Road repair Keep the road to maintain the performance of the road, restore the damaged part in time, ensure the safety, comfort and smooth driving, save transportation costs and time; Correct technical measures should be taken to improve the quality of the project, extend the service life of the road, and postpone the reconstruction time. With the performance, the damaged part is restored in time to ensure the safety, comfort and smooth driving, saving transportation costs and time; Correct technical measures should be taken to improve the quality of the project, extend the service life of the road, and postpone the reconstruction time.

The asphalt spreading truck is an intelligent high-tech product that specializes in spreading emulsified asphalt, diluted asphalt, hot asphalt, heavy traffic asphalt and modified asphalt. It is used in highway construction and highway maintenance projects, and can be used for the construction of upper and lower seals, permeable layers, waterproof layers, bonding layers, asphalt surface treatment, asphalt penetration pavements, fog seals and other projects of different grades of highway pavements. , can also be used for the transportation of liquid asphalt or other heavy oil. So what are the advantages of Qiangguomeng’s asphalt spreader trucks?

We should select products that meet the specifications, and we should not select raw materials that do not meet the specifications. The other thing is the operation technology of asphalt heating equipment. Skilled operation technology is the most important, and training is required before taking up the post.
In recent years, with the continuous development of various industries, the production of various equipment including modified asphalt equipment has been further developed and applied. Professionals introduced that in the process of using modified asphalt equipment for production, the terminal control system implements full automatic control of medium weight, working temperature, working flow, valve opening and closing, etc., thereby ensuring the quality of modified asphalt and greatly improving production efficiency. Now Shandong Duxiu Factory will explain the operating advantages of modified asphalt equipment to customers:
The base asphalt is heated to 150-170℃ in the rapid heating tank and then enters the blending tank to mix with the modifier fed in through the feeding device. The asphalt pump at the bottom of the blending tank then sends it to the colloid mill for high-speed grinding and shearing, so that the modifier and base asphalt are fully dissolved in extremely small particles, thereby improving the various properties of the asphalt. The finished modified asphalt after high-speed shearing and grinding enters the finished product development tank at the rear for direct use.

With the development of science and technology, the emergence of emulsified asphalt tanks has brought great convenience to our work, and is widely used in every site. So what issues need to be paid attention to when filling emulsified asphalt tanks? Below, the editor will introduce to you the relevant knowledge structure diagram, hoping to be of some help to you.

Water is one of the raw materials of the modified asphalt storage tank, and it is distributed in various components of the modified asphalt storage tank equipment. According to the components where water is distributed, the anti-cold measures are explained one by one. The water tank of the modified asphalt storage tank, the water inside the water tank is released through the filter valve. Some instruments of the modified asphalt storage tank do not have a filter valve to save the cost of the equipment. The modified asphalt storage tank can only be drained by loosening the flange bolts at the bottom. The water pump of the modified asphalt storage tank mentioned here includes a hot water pump and a circulating water pump. This type of water pump for the modified asphalt storage tank generally uses a pipeline centrifugal pump. There is a sewage outlet at the bottom of the pipeline centrifugal pump. The modified asphalt storage tank pays attention to the sewage treatment of the sewage outlet at the bottom of the pump. The modified asphalt storage tank emulsion tank generally uses a cone bottom. However, in order to better process the modified asphalt storage tank coefficient, the inlet and outlet are usually not placed at the bottom of the modified asphalt storage tank. Emulsion (mostly water) will remain at the bottom of the tank, and this part of the residual liquid in the modified asphalt storage tank must be discharged through the filter valve at the bottom. Emulsion pump for modified asphalt storage tank There are basically two types of emulsion pumps for modified asphalt storage tank equipment on the market, gear pumps or centrifugal water pumps. Gear pumps can only discharge the liquid inside the pump through the connection flange of the pipeline. The centrifugal water pump for modified asphalt storage tanks uses its own sewage outlet for sewage treatment. The first four items of modified asphalt storage tanks with basic knowledge are basically discharged, and the modified asphalt storage tanks will focus on the latter types. Modified asphalt storage tank colloid mill There will also be residual emulsion or water inside the modified asphalt storage tank colloid mill. The gap between the stator and rotor of the colloid mill is within 1mm. If there is a little residual water in the modified asphalt storage tank, it will cause the accident of frozen modified asphalt storage tank. The residue in the colloid mill can be treated by loosening the connection bolts of the finished product pipeline.

Slurry seal is a common pavement surface treatment method that uses special slurry materials and construction techniques to maintain and repair pavements. Its advantages include cost-effectiveness, environmental friendliness, and improved pavement performance, making it widely used in pavement engineering.
1. Overview of Slurry Seal Treatment
Slurry seal is a pavement surface treatment technique that uses special slurry materials. This treatment technique involves laying a layer of slurry material on the pavement surface to achieve pavement maintenance and repair. Slurry seal offers advantages such as cost-effectiveness, environmental friendliness, and ease of construction, making it widely used in pavement engineering.
2. Characteristics of Slurry Seal Treatment
1. Cost-Effectiveness: Compared to traditional pavement maintenance methods, slurry seal is less expensive and can effectively reduce maintenance costs.
2. Environmental friendliness: Slurry seal uses primarily environmentally friendly materials, resulting in minimal environmental impact and meeting the requirements of green development.
3. Ease of Construction: Slurry seal offers a simple construction process and a short construction period, quickly restoring pavement performance.
III. Slurry Seal Treatment Process
1. Road Cleaning: Before construction, the road surface must be cleaned to ensure it is clean and free of debris.
2. Slurry Material Laying: The slurry material is laid on the road surface, ensuring it is evenly applied and without any gaps.
3. Compaction: After the slurry material is laid, it is compacted using a roller to ensure it is firmly bonded to the road surface.
IV. Application and Benefits of Slurry Seal Treatment
Slurry seal treatment is widely used in practical projects, and its benefits are primarily reflected in the following aspects:
1. Improving Pavement Performance: Slurry seal treatment can effectively enhance pavement performance, such as skid resistance, wear resistance, and water resistance, improving pavement performance.
2. Extending Pavement Life: Slurry seal treatment effectively protects the pavement, delaying aging and damage, and extending its service life.
3. Improving Pavement Aesthetics: Slurry seal treatment creates a smooth and aesthetically pleasing surface, enhancing the overall appearance of the pavement.
In summary, slurry seal, as an economical and environmentally friendly pavement surface treatment method, has broad application prospects in pavement engineering. With the continuous advancement of technology and the continuous upgrading of materials, slurry seal will play an even greater role in the field of pavement maintenance.

No matter the application of emulsified asphalt equipment or other related equipment, in the application of appropriate maintenance work, today we introduce professional technicians to do the following 3 points to effectively improve the utilization rate of asphalt equipment:
1. When the emulsified asphalt plant is out of use for a long time, the liquid in the pipeline and storage tank should be discharged, the lid should be sealed, kept clean, and all moving parts are lubricated. When it is used for the first time and disabled for a long time, the rust of the oil tank should be removed, and the water filter should be cleaned regularly.
2. When the outdoor temperature is lower than -5℃, the emulsified asphalt production equipment shall not store the product without insulation device, and it should be discharged in time to avoid freezing and demulsification of emulsified asphalt.
3. The gap between the stator and the rotor of the emulsified asphalt equipment should be checked regularly. When the machine cannot meet the smaller gap requirements, the stator and rotor should be replaced.

Stainless steel bitumen melters use bitumen concrete micro-powder machines. Its blade strength is high, the angular velocity of the moving disc is high, and the gap can be adjusted to 0.15mm. Stainless steel bitumen melters are suitable for the production and processing of various polymer bitumen concrete, such as SBS, PE, EVA, etc.
Stainless steel bitumen melters use independently developed special batching tanks, stainless steel bitumen melter force stirring devices, liquid level meter overflow prevention equipment, granular material dosage and equipment, liquid additive automatic addition equipment and other production key points. It ensures the full-position process guarantee for the stainless steel bitumen melter of the bitumen concrete production line. The stainless steel bitumen melter processing stainless steel bitumen melter rate is significantly increased, and the quality of stainless steel bitumen melters is greatly improved.

Bitumen is a mixture of organic compounds. The road surface paved with bitumen by modified emulsified bitumen equipment is a seamless continuous road surface with good durability and wear resistance. It does not soften at high temperatures and does not crack at low temperatures. It has been promoted and applied worldwide for its superior performance such as strong bearing capacity, no dust, anti-slip, and noise.
Modified bitumen refers to an asphalt mixture that has been improved by adding modifiers such as rubber, resin, high molecular polymer, and finely ground rubber powder, or by lightly oxidizing bitumen. The excellent performance of modified bitumen equipment comes from the modifiers added to it and the world’s advanced colloid mill; the modifiers can not only merge with each other under the action of temperature and kinetic energy, but also react with bitumen, thereby greatly improving the mechanical properties of bitumen. The modified bitumen produced by modified emulsified bitumen equipment can effectively enhance the load capacity of the road surface, reduce the fatigue of the road surface caused by excessive load, and extend the service life of the road surface exponentially. Therefore, it can be widely used in the paving of high-grade highways, airport runways and bridges.

Asphalt spreader is an irreplaceable tool for highway maintenance. Asphalt spreader is an irreplaceable tool for highway maintenance. Highway maintenance is divided into four categories according to the nature of the project, scale, and technical complexity: minor repair, medium repair, major repair, and improvement. Specific classification:
(1) Minor repair and maintenance project: preventive maintenance and repair of slightly damaged parts of the highway and all its engineering facilities to keep them in good condition. It is usually planned and carried out daily by the maintenance team within the annual minor repair and maintenance quota funds on a monthly (ten-day) basis.
(2) Medium repair project: regular repair and reinforcement of general wear and tear and local damage of highway engineering facilities to restore them to their original state. It is usually planned and implemented by grassroots road maintenance agencies on an annual (seasonal) basis.
(3) Major repair project: periodic comprehensive repair of major damage to highway facilities to fully restore them to the original design standards, or local improvements and individual additions within the original technical level to gradually improve the highway’s traffic capacity. It is usually organized and implemented by grassroots road maintenance agencies or with the help of their superior agencies according to the approved annual project budget.
(4) Improvement projects are large projects that improve the technical level of roads and their engineering facilities in stages and sections due to their inability to meet traffic volume and load requirements, or significantly improve traffic capacity through improvements. It is usually organized and implemented or completed through bidding by regional road maintenance agencies or provincial road maintenance agencies according to the approved plan and design budget. As a manufacturer of asphalt spreaders, we welcome you to visit us.

The surface tension of asphalt and water varies greatly, and asphalt and water will not mix at room temperature or high temperatures. However, when the emulsified asphalt is subjected to high-speed mechanical centrifugation, shearing, and impact, it forms particles with a size of 0.1-5 microns and disperses them into a water medium containing a surfactant (emulsifier stabilizer). Because the emulsifier adsorbs on the surface of the emulsified asphalt particles, it reduces the interfacial tension between water and asphalt, allowing the asphalt particles to be dispersed in the surfactant-containing water medium (forming a stable dispersion in the water). Emulsified asphalt equipment produces an oil-in-water emulsion. The dispersion is brown, with asphalt as the dispersed phase and water as the continuous phase, and has good fluidity at room temperature.
Precautions for Using Emulsified Asphalt Equipment
1. Before spraying, the equipment must be checked for correct valve position. The hot asphalt added to the emulsified asphalt equipment must be operated within the temperature range of 160-180°C. The heating device can be used for long-distance transportation or long-term operation, but it cannot be used as an oil melting furnace.
2. When using a burner to heat asphalt in an emulsified asphalt plant, the asphalt level must exceed the upper surface of the combustion chamber, otherwise the combustion chamber will burn out. The emulsified asphalt plant must not be overfilled. The oil filler cap must be tightened to prevent asphalt spillage during transport.
4. When using the front control console, the switch should be set to front control. In this case, the rear control console can only control the nozzle raising and lowering.

Here is an introduction to the knowledge on construction quality control of modified rubber asphalt equipment. Let’s introduce this knowledge from three aspects. The details are as follows: The viscosity of the modified asphalt mixture of modified rubber asphalt equipment is relatively high, and the construction temperature of each process is The construction temperature requirements are higher than those of ordinary asphalt mixtures.

Improve the understanding of the importance of preventive maintenance
We should further improve the understanding of the importance of preventive maintenance and raise preventive maintenance to the level of highway asset protection and road protection. At present, leaders at all levels and maintenance departments do not fully understand the significance of preventive maintenance of asphalt pavement. We should deepen our understanding of the important role of preventive maintenance and improve the strategic awareness, initiative and creativity of preventive maintenance. At the same time, the maintenance department should strengthen communication and exchanges with transportation authorities and financial management departments at all levels, so that departments at all levels understand the importance and necessity of preventive maintenance and create conditions for the implementation of preventive maintenance and funding sources. At the same time, it is very necessary to add preventive maintenance to the classification of maintenance projects, which will help the management of leaders at all levels and the implementation of preventive maintenance.
Improve the decision-making and planning of preventive maintenance
According to the decision-making and planning process, reasonably arrange the preventive maintenance of asphalt concrete pavement structure to ensure the safe and stable operation of highway projects throughout the life cycle, and reduce production costs while providing high-quality traffic services. Therefore, the key to preventive maintenance of asphalt concrete pavement structure lies in establishing a scientific decision-making and planning mechanism. The Ministry of Transport proposed in the “13th Five-Year Plan for Highway Maintenance Management Development” that the average annual mileage of preventive maintenance for expressways should not be less than 8%, and that for ordinary national and provincial roads should not be less than 5%. In the actual application process, local governments should also actively summarize experience and propose different preventive maintenance ratios based on the specific conditions of different regions.