Application

In highway construction, asphalt mixing station plays a vital role. As a kind of equipment integrating intelligence, high efficiency and environmental protection, asphalt mixing station provides strong support for improving the quality of highway construction. This article will introduce the relevant knowledge of asphalt mixing station in detail to help readers understand this key equipment.
Asphalt mixing station is a kind of equipment specially used for producing asphalt concrete, which is widely used in highway, municipal road, bridge and other engineering construction. Asphalt concrete is a kind of building material mixed with asphalt, gravel, sand and other materials. It has the characteristics of strong durability and good compressive resistance. It is an ideal material for highway construction.
2. Features
Intelligence: Asphalt mixing station is equipped with advanced control system and sensor, which can realize automatic production, reduce manpower input and improve production efficiency.
Environmental protection: Asphalt mixing station adopts closed design to reduce dust pollution, and is equipped with noise reduction facilities to reduce noise pollution.
Efficiency: Asphalt mixing station has high production capacity and can produce a large amount of asphalt concrete in a short time to meet the needs of engineering construction.
3. Function
Provide asphalt concrete: The main function of asphalt mixing station is to produce asphalt concrete and provide necessary building materials for highway construction.
Improve highway quality: By using asphalt concrete, the smoothness, compressive strength and durability of the highway can be improved, thereby improving the quality of the highway.

Never stop, escorting the quality of road construction
Inheriting decades of technical accumulation, asphalt mixing station has become an indispensable part of building and maintaining high-level roads. This seemingly ordinary device carries the important mission of ensuring road safety and improving driving experience. As the core technology of modern road engineering construction, asphalt mixing station goes all out to continuously strive for a better, safer and more efficient travel environment.
Fast drive, tenacious progress
Asphalt mixing station plays a role in road engineering. It uses mature technology and processes to ensure the smooth progress of road construction with efficient mixing capacity and stable production quality. From conveying raw materials to the precise proportion of oil and aggregates, to the uniform mixing of the final product, the asphalt mixing station, with its professional working attitude, ensures the quality and stability of road materials, and provides a solid foundation for the construction of high-standard road projects.
Innovation leads, environmental protection takes the lead
Asphalt mixing station plays an important role in promoting sustainable development. Faced with increasingly urgent environmental protection requirements, mixing stations continue to innovate technology, improve production efficiency, and also pay attention to environmental protection responsibilities. By introducing advanced dust removal and purification devices, intelligent equipment control systems and combustion equipment, the asphalt mixing station effectively reduces environmental pollution and makes positive contributions to protecting the surrounding ecological environment.

We have conducted in-depth research on asphalt distributors and have accumulated a lot of production technology experience. We have conducted professional and in-depth research on some problems existing in the market to provide convenience for everyone in future production applications.
Every time when spraying asphalt, the asphalt distributor does not spray asphalt. Troubleshooting. The asphalt distributor does not spray asphalt. It is a common fault. The following teaches you how to solve the problem of not spraying asphalt.
1. No asphalt spraying
Analysis of the reasons may be the following reasons:
1. Is the asphalt pump working?
2. Are the valves adjusted correctly?
3. Is the pump or pipeline blocked?
2. Troubleshooting method
1. Check whether the hydraulic system is working properly?
2. After adjusting the valve position, the asphalt distributor must be cleaned to avoid pipeline blockage when used next time. Because the asphalt distributor has different high and low configurations, it can spread various high-viscosity and high-temperature modified asphalts and rubber asphalt in high configuration. If you mistakenly use a low-configuration asphalt truck to spread this type of asphalt, you must spray the asphalt inside the entire vehicle clean after the first use. After spraying, in order to leave no residual asphalt, you can use waste diesel to clean it. Our company’s vehicles are equipped with air cleaning and gravity cleaning devices. Diesel cleaning is a reliable cleaning method.

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.

In order to better play the role of slurry seal vehicles, this article explains the matters that should be noted from the aspects of the scope of application, type and material selection, construction technology, common diseases, etc. of slurry seal vehicles.
The slurry seal vehicle is thin in thickness and mainly plays the role of waterproofing, anti-skid, wear-resistant and improving the appearance of the road surface. In the pavement structure system, it can only serve as a surface protection layer and wear layer, but not a load-bearing structure. It is widely used in the construction and maintenance of highways. Practice has proved that the slurry seal can also play an important role by reasonably selecting the thickness and type of the slurry seal and strictly controlling the construction technology and quality.
(1). The scope of application of slurry seal vehicles includes the following aspects:
1. When the pavement damage index of expressways and first-class highways is evaluated as medium and below, or the pavement damage index of second-class and below highways is evaluated as secondary and below, when medium repair and overlay measures should be taken, slurry seal can be selected.
2. When the pavement driving quality index of expressways and first-class highways is evaluated as medium or below, or the pavement driving quality index of second-class and below highways is evaluated as second or below, medium repair and overlay measures should be taken to improve its flatness, and slurry seal can be selected.
3. For sections of expressways and first-class highways with insufficient anti-skid capacity (SFC<40), or sections of second-class and below highways with insufficient anti-skid capacity (SFC<33.5), measures such as adding overlays should be taken to provide anti-skid capacity of the road surface. 4. Anti-skid layer and waterproof protective layer used for third- and fourth-class highways to improve the appearance of the road surface.

Emulsified asphalt equipment plays an important role in road construction, and its production quality will directly affect the quality of facilities such as roads. In order to operate it better, we need to pay special attention to the following four points when applying emulsified asphalt equipment:
1. Before spraying, the emulsified asphalt equipment must check whether the position of each valve is correct. The hot asphalt added to the emulsified asphalt equipment must reach an operating temperature of 160~180℃. For long-distance transportation or long working time, a heating device can be used for insulation, but it cannot be used as an oil melting furnace.
2. When the asphalt in the emulsified asphalt equipment is heated by a burner, the asphalt height must exceed the upper plane of the combustion chamber, otherwise the combustion chamber will be burned.
3. The emulsified asphalt equipment cannot be filled too full, and the fuel filler cap must be closed tightly to prevent asphalt from overflowing during transportation.
4. This vehicle has two front and rear control consoles. When using the front control console, the switch must be turned to the front control. At this time, the rear control console can only control the lifting and lowering of the nozzle.
I believe that through the above description, everyone will be more comfortable when using emulsified asphalt equipment in the future. As for the relevant operating matters of the equipment, I will introduce them to you here today. If you want to know more information, please pay attention to the next explanation.

Modified asphalt equipment is a widely used asphalt equipment. Now its ultra-high performance has been widely praised by users. However, we must first ensure the safe use of modified asphalt equipment in order to fully demonstrate its performance. So how much do you know about the safe use and operation of modified asphalt equipment? Today, Gaoyuan Road Construction will explain it in detail:
1. Placement: The modified asphalt equipment should be placed on a flat place, and the front axle wheel should be fixed with sleepers and the tires should be suspended to ensure that the machine does not move around during operation.
2. Check regularly whether the mixer blades are deformed and whether the screws are loose.
3. Check whether the running direction of the mixing barrel is consistent with the arrow. If not, please replace the positive and negative poles of the wiring.
4. Before powering on, check for empty vehicle trial operation, check for leakage, and check the idling of the mixing barrel. The normal speed is about 3 times faster when the empty vehicle is full. If the speed is wrong, you should stop and check.
5. If the machine is stopped for more than one hour after the asphalt mixing is completed, clean the mixing barrel, pour in clean water, and clean the mortar. Then drain the water. Remember that there should be no water accumulation in the barrel to prevent the formula from changing and even rusting of the pages and other links.

In the asphalt-water system, the emulsifier molecules move between the asphalt and water interface, and the water-loving groups of the molecules are adsorbed on the surface of the asphalt, making it charged, while the hydrophilic groups enter the water phase. This connects the asphalt particles with water, reducing the interfacial tension between the two. At the same time, because the asphalt particles have the same charge and repel each other, they are prevented from agglomerating with each other, so that the asphalt emulsion can remain uniform and stable for a certain period of time. The nature of the charge is determined by the charge of the hydrophobic group or hydrocarbon chain of the emulsifier. If it is negatively charged, the asphalt particles are negatively charged, and the emulsion formed is an anionic asphalt emulsion. Otherwise, it is a cationic asphalt emulsion. If the asphalt particles have both negative and positive charges, the emulsion is a zwitterionic asphalt emulsion; in addition, there is also a non-ionic asphalt liquid.

The site selection of the asphalt mixing station should follow three principles. Let’s take a look:
1. When selecting the site for the asphalt mixing station in the early stage of construction, the construction party should pay attention to the line direction of the construction site, because the line direction of the construction site will directly affect the quality of the mixed asphalt. Asphalt is an important material used for road and engineering construction. If the quality is poor, it will inevitably have a serious impact on the quality and safety of the entire project. Therefore, when selecting the site, it must be considered in many aspects, and meet the on-site requirements, and confirm the location of the mixing station according to the drawings.
2. Secondly, it is necessary to have a full understanding and grasp of the basic elements of the asphalt mixing station construction, such as whether water and electricity can be supplied normally, or whether the size of the land is sufficient to build an asphalt mixing station.
3. Since the use of asphalt mixing stations belongs to mechanized construction, there will inevitably be dust, noise and other pollution problems during the operation. It can be seen that when selecting the site, it must be kept as far away as possible from residential areas, schools or farms to avoid a greater impact on the surrounding environment.

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.

After the emulsified bitumen equipment has been used for a long time, it needs maintenance. There are several points to note when adjusting the emulsified bitumen equipment:
1. During use, regular maintenance should be carried out as appropriate according to the processing materials;
2. For the maintenance and use of the motor, please refer to the motor manual;
3. Most of the random spare parts are national standard and department standard parts, which are purchased all over the country;
4. The colloid mill is a high-precision machine with a line speed of up to 20m/second and a very small grinding disc gap. After inspection and reinstallation, the coaxiality error between the housing and the main shaft must be corrected with a dial indicator ≤0.05mm;
5. When repairing the machine, it is not allowed to be directly knocked with an iron bell during the disassembly, reinstallation and adjustment process. Use a wooden hammer or a wooden block to knock gently to avoid damaging the parts;
6. The machine seals: divided into static and dynamic seals. The static seal uses an O-type rubber ring and the dynamic seal uses a hard mechanical combined seal. If the hard sealing surface is scratched, it should be repaired by grinding on flat glass or flat casting immediately. The grinding material should be ≥200# silicon carbide grinding paste. If the seal is damaged or cracked seriously, please replace it immediately.

Asphalt mixing plants, what role? Asphalt mixing plants, also known as asphalt concrete production equipment, is a special facility for mixing, heating, dust removal and other process treatments for raw materials such as sand, mineral powder, asphalt, etc., to produce asphalt concrete for road construction. As an indispensable role in road construction, the responsibility of the asphalt mixing plant is not only to complete the production of asphalt concrete, but also to provide solid guarantee for road construction.

Highways basically use asphalt materials, and asphalt mixing plants can be used to produce a variety of asphalt mixtures. So what are the mixing methods of asphalt mixing plants?
According to the mixing method, it can be divided into: continuous drum type and intermittent forced type. Continuous drum type, that is, the production is produced by continuous and uninterrupted mixing method, and the heating and drying of aggregates and the mixing of mixtures are carried out continuously in the same drum.
Forced intermittent type, that is, the heating and drying of aggregates and the mixing of mixtures are forced to be carried out periodically. The equipment mixes one pot at a time, and each mixing takes 45 to 60 seconds. The output depends on the equipment model.

Emulsified asphalt equipment is an indispensable equipment in road construction and one of the basic equipment for waterproof coatings. What are the components of emulsified asphalt equipment? Today, we will explain the various parts of emulsified asphalt equipment in detail.
Required parts
Asphalt pump: a device for supplying asphalt to the colloid mill.
Emulsion pump: a device for supplying emulsion to the colloid mill.
Colloid mill: a device for mixing, homogenizing and emulsifying asphalt and emulsion.
Control system: a device for controlling the flow of asphalt and emulsion, and the start and stop of various pumps.
Emulsion blending: a device for mixing water, emulsifiers and other additives.
Water heating part: a device for heating water.

How should the working efficiency of asphalt mixing plant be improved? Let’s take a brief look.
1. Parameter setting. When using asphalt mixing plant to produce asphalt, the temperature of the hot pot can be observed through the temperature controller, but there is a certain difference between the information displayed by the temperature controller and the actual temperature. The generation of this error does not have much impact on the processing quality. If the information entered by the staff when setting the temperature is accurate, there will be no problems with the produced asphalt. It can be seen that the setting of parameters requires more attention.
2. Pay attention to avoid moisture in the equipment. When transporting and storing the asphalt mixing plant, pay attention to avoid moisture in the equipment, because there are many circuit devices inside it, if moisture, it may cause quality problems or even damage. This is also an important point to consider to improve production efficiency.
3. When installing and using the asphalt mixing plant, pay attention to whether the equipment is grounded. Before starting the equipment, it must be preheated in time so that the temperature standard can be reached within a shorter time range, so as to enter the normal asphalt production process.

The hydraulic reversing valve of asphalt mixing plants is generally not prone to failure, but occasionally there may be untimely phase change, gas leakage, electromagnetic induction pilot valve, etc., and the corresponding fault causes and treatment methods are naturally different.
If the hydraulic reversing valve does not change phase in time, it is mostly caused by poor finish, spring stuck or damaged, oil stains or residue stuck in the drag part, etc. It is necessary to check the condition of the pneumatic triplex and the viscosity of the grease. If necessary, the grease or other parts can be replaced.
During long-term use, the hydraulic reversing valve of the asphalt mixing plant is prone to damage to the valve core sealing ring, valve seat and high-pressure gate valve, causing gas leakage in the valve. At this time, the sealing ring, valve seat and high-pressure gate valve should be replaced, or the hydraulic reversing valve should be replaced in time.
Therefore, in order to more effectively reduce the equipment failure rate of the asphalt mixing plant, it is also necessary to pay attention to the maintenance of machinery and parts.

Asphalt emulsifiers can be divided into synthetic emulsifiers, natural emulsifiers, inorganic powder emulsifiers, etc. according to their formation. Synthetic emulsifiers are currently the most widely used. Asphalt emulsifiers are a type of organically synthesized surfactant that can emulsify asphalt.
Emulsifiers are divided into ionic and non-ionic types according to whether the hydrophilic group of the emulsifier molecule is charged when the emulsifier is dissolved in water. Ionic emulsifiers are divided into cationic and anionic types due to the different charges of the hydrophilic group after ionization in water. In addition, there are zwitterionic types.
Cationic emulsifiers are divided into three types: fast cracking, medium cracking, and slow cracking according to the speed of demulsification. Slow cracking emulsifiers are divided into slow setting and fast setting according to the length of time the mixture solidifies. Slow cracking and slow setting types are mainly used as permeable oils. Slow cracking and fast setting are used for micro-surfacing, slurry sealing, cold regeneration, etc. Medium cracking and fast cracking types are used for adhesive layer oils, gravel sealing layers, and waterproof base oils.

Introduction to asphalt mixing plant Asphalt is a product of petroleum distillation.
Asphalt is a dark brown complex mixture of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid. It often exists in the form of liquid or semi-solid petroleum. The surface is black and soluble in carbon disulfide and carbon tetrachloride. Asphalt is an organic gelling material that is waterproof, moisture-proof and anti-corrosive.
Asphalt can be mainly divided into three types: coal tar asphalt, petroleum asphalt and natural asphalt: among them, coal tar asphalt is a by-product of coking. Petroleum asphalt is the residue after crude oil distillation. Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the earth’s crust. Asphalt is mainly used in industries such as coatings, plastics, rubber, and paving roads.

During the asphalt mixing process, we generally use complete sets of asphalt mixing plant equipment to carry out mixing operations. What are the benefits of using complete sets of equipment? Let’s take a look.
1. High efficiency
Complete sets of equipment can help improve production efficiency and ensure production quality.
2. Ensure quality
When mixing asphalt, a ratio will be set. For asphalt liquid used in different occasions, its ratio control has strict requirements. Only by ensuring its mixing method and mixing time can we ensure whether the asphalt liquid meets the production requirements. One of the benefits of using complete sets of equipment in the mixing station is that the quality can be effectively controlled.
3. Can be sampled
After the asphalt mixing plant is mixed, the relevant quality inspection personnel can conduct sample inspections to ensure that the mixed asphalt liquid meets the use requirements.
Using complete sets of equipment in the asphalt mixing plant can more conveniently control the mixing time and the order of feeding, and then effectively sample inspection, so as to ensure that the quality meets the construction requirements.

After the emulsified asphalt equipment has been used for a long time, it needs maintenance. There are several points to note when adjusting the emulsified asphalt equipment:
1. During use, regular maintenance should be carried out as appropriate according to the processing materials;
2. For the maintenance and use of the motor, please refer to the motor instruction manual;
3. Most of the random spare parts are national standard and department standard parts, which are purchased all over the country;
4. The colloid mill is a high-precision machine with a line speed of up to 20m/second and a very small grinding disc gap. After overhaul, the coaxiality error between the housing and the main shaft must be corrected with a dial indicator to ≤0.05mm;
5. When repairing the machine, it is not allowed to be directly knocked with an iron bell during the disassembly, reassembly and adjustment process. Use a wooden hammer or a wooden block to knock gently to avoid damaging the parts;
6. The seals of this machine are divided into static and dynamic seals. The static seal uses an O-type rubber ring and the dynamic seal uses a hard mechanical combined seal. If the hard sealing surface is scratched, it should be repaired by grinding on flat glass or flat castings immediately. The grinding material should be ≥200# silicon carbide grinding paste. If the seal is damaged or cracked seriously, please replace it immediately.

The slurry sealer is a special equipment for road maintenance that we see in our lives. The slurry sealer is mainly used to deal with the decrease in surface wear resistance, cracks, etc. of the road, to improve the waterproofness and skid resistance of the road surface, thereby greatly improving the driving comfort and flatness inside, so as to achieve a new effect for the road surface. So what is the operation process of the slurry sealer?
Before starting the slurry sealer, you should be prepared to test the quality of the slurry sealer materials before construction. One of the most important points is to certify and inspect whether the content of emulsified asphalt can meet the requirements of the specification, and the mixture should also meet the requirements. After confirming the measurement standards, check that the road surface to be constructed should be dry, free of debris, water, flat, etc.

As technology becomes more and more advanced, we use more and more equipment in our lives, and the functions are also very complete. Synchronous crushed stone seal is also a product used in many places. After continuous improvement and development, it has many functions. Next, we will introduce to you the problem of preventive maintenance of synchronous crushed stone seal? If you want to know, you can read it together.

If asphalt mixing stations want to get approval results as soon as possible and operate normally, they must have corresponding environmental protection conditions. The manufacturer will introduce to you what environmental protection conditions asphalt mixing stations should have.
1. Low energy consumption
This is what asphalt mixing stations must meet. Under the same quantity and quality, the less energy the asphalt mixing station consumes during operation, the more it meets the requirements of environmental protection, such as low consumption of water and electricity resources.
2. Reduce pollution emissions
During the operation of asphalt mixing stations, the adverse effects on the environment should be reduced and pollutants should be better controlled, so that they can be defined as environmentally friendly asphalt mixing stations. At the same time, the requirements of site planning must be met. Whether it is the production area or the conversion area of ??wastewater and waste gas, the corresponding environmental protection requirements must be met.
3. High production efficiency
An environmentally friendly asphalt mixing station must not only reduce energy consumption and reduce the emission of pollutants during the entire production process, but also achieve good production efficiency.

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.

As a black road construction machinery, the synchronous chip sealer is the main equipment for highways, urban roads, airports, and port terminal facilities. Do you know what kind of synchronous chip sealer? What products do you have to choose from?
Asphalt dispensers are classified according to the purpose, operation mode, and drive mode of the asphalt pump. According to the purpose, asphalt dispensers can be divided into two types: road use and road construction use. The asphalt tank capacity of the asphalt dispenser used for road construction generally does not exceed 400L, while the asphalt tank capacity of the asphalt dispenser used for road construction is 3000-20000L.

Effective maintenance of the drying drum of the asphalt mixing plant can extend its service life and reduce the cost of use. Let’s take a look at how to maintain it reasonably.
1. The drying drum should be stopped when the aggregate is not running in the asphalt mixing equipment. After the work is over every day, the equipment should be operated to discharge the aggregate into the dryer. After closing the combustion chamber, the combustion chamber should be idle for about 30 minutes to cool down to reduce the impact or allow the machine to run automatically.
2. Install the drying cylinder fixing ring on the roller synchronously. Check the environment in the patrol ring regularly. Whether the roller is adjusted, the straight roller will automatically move to the conveying end, and then the bias will be adjusted to the correct position.
3. If the roller table is in contact with only one of the two thrust rollers, the gap sheet can be filled under the support roller until it is simultaneously subjected to the full width of the support ring. The specified nutritional state should be maintained by the thrust wheel, but it is used to compensate for the desire not to express.
4. If the drying drum is equipped with a drive device, a certain amount of power should be added in small amounts.

People pay more and more attention to urban construction, and the use of asphalt is increasing. The application rate of asphalt mixing station is naturally growing rapidly.
Asphalt mixing station will encounter some faults more or less during use. The most common ones are uneven wear of the supporting wheel and wheel rail. Sometimes there will be some abnormal noise and gnawing. The main reason for this is that after the asphalt mixing station has been working for a period of time, the internal drying cylinder will be subjected to high temperature, and then friction will occur between the supporting wheel and wheel rail.
The above situation will also be accompanied by severe shaking, because the asphalt mixing station will directly cause the gap between the wheel rail and the supporting wheel to be improperly adjusted under the action of the drying material, or the mutual position of the two will be skewed. When encountering this situation, the user should add grease to the surface contact position of the supporting wheel and the wheel rail after daily operation.
In addition, the staff also need to pay attention to and timely adjust the tightness of the fixing nut while adding grease, and then effectively adjust the spacing between the supporting wheel and the wheel rail, so that the asphalt mixing station can work smoothly, all contact points can be evenly stressed, and there will be no shaking.

Emulsified asphalt is made by hot melting asphalt, dispersing it in an aqueous solution containing an emulsifier in a fine particle state through mechanical action, forming an oil-in-water asphalt emulsion. In road construction and maintenance projects, emulsified asphalt can be used for road maintenance, bonding between road layers, bridge deck paving, permeable oil on cement-stabilized macadam foundation, slurry seal waterproof layer, etc. It has the advantages of cold construction, safety, environmental protection, resource conservation, energy conservation, extended construction season, and improved construction conditions. It plays a very important role in the construction and maintenance of municipal roads, especially in recent years, the improvement of the production level of emulsified asphalt has actively promoted the technological progress and promotion and application of emulsified asphalt. However, in the production and use of emulsified asphalt, undesirable phenomena such as crusting, flocculation, oil-water stratification, and agglomeration often occur, which brings unnecessary troubles to construction. To this end, the author conducted a large number of experimental studies from nine aspects, including emulsification equipment, emulsifier, base asphalt, pH value, temperature, storage temperature, mechanical action, freezing and melting, and long-term placement, and summarized the factors that affect the stability of emulsified asphalt. The analysis is as follows:

Asphalt mixing plants play a big role in industry. Before talking about asphalt mixing plants, let’s first understand asphalt. Asphalt is a dark brown, high-viscosity organic liquid composed of hydrocarbons and non-metallic substances of different molecular weights. The surface is black and soluble in carbon disulfide. It is a waterproof, moisture-proof and anti-corrosion organic gelling material. When it comes to asphalt, it can be mainly divided into three types: coal tar asphalt, petroleum asphalt and natural asphalt: among them, coal tar asphalt is a by-product of coking. Petroleum asphalt is the residue after crude oil distillation. Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the earth’s crust.