Four major precautions for fog seal layer construction

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.

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.

Conventional pit repair techniques are mainly hot material repair and cold filling repair, and warm mixing technology is used to ensure compaction, while there are also some special repair methods such as slurry seal/micro-surface material repair

Slurry sealers are important equipment for road maintenance and repair. They are mainly used to pour durable asphalt mixtures on old roads to form a new protective layer. This equipment can be constructed according to the surface texture of the road surface, so that the cracks in the surface layer are isolated from water and air, effectively preventing the road surface from aging further.
The working principle of the slurry sealer is to mix materials such as aggregate, emulsified asphalt and additives into slurry, and then evenly lay it on the road surface. The slurry formed after the mixture of these materials has good waterproof and skid resistance, which can significantly improve the service life of the road surface and driving safety.

In the cold winter, you need to pay attention to the following points when using asphalt melting equipment:
1. Protection from cold and warmth: The equipment needs to be operated indoors or in a place with shading facilities, and ensure that the temperature of the equipment and the surrounding environment is maintained within an appropriate range.
2. Check the equipment: Before use, the equipment should be checked, including whether the circuits, fluid circuits and other parts of the equipment are working normally, and whether there are any leaks of electricity or water in the equipment.
3. Pay attention to safety: During operation, you should wear protective equipment and avoid direct contact with hot asphalt. At the same time, it is necessary to avoid equipment overload operation and prevent equipment damage and safety accidents.
4. Control speed: Reasonably control the working speed of the equipment according to weather conditions and road conditions to avoid overheating of the equipment, causing asphalt to flow too quickly or burn.
5. Storage conditions: When not in use, place the device in a dry, ventilated place with moderate temperature, and ensure that any residue in the device is completely removed.

According to the configuration, layout and controllability of bitumen melting equipment, bitumen melting plant can be divided into three types: mobile, transportable and portable. What should be paid attention to in the production of bitumen melter equipment of different sizes? Let’s learn about it below!
Bitumen melting plant is to fix the demulsifier mixing equipment, black anti-static tweezers, asphalt pump, automatic control system, etc. on a special support chassis. Because the bitumen melter equipment can directly change the production site, it is suitable for the production of emulsion bitumen in construction sites with decentralized projects, small usage and frequent movement.
The main components of the bitumen melting equipments are installed in one or two 60 standard containers. The bitumen melting plant is loaded and transported separately to complete the relocation of the construction site. With the help of asphalt melting equipments hoisting equipment, it is quickly installed and put into operation. Such bitumen melter plant has large, medium and small different configurations, which can meet different project requirements.

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.

When performing bitumen melting, specialized equipment is required. These equipment usually include bitumen melting furnaces, asphalt mixers, asphalt conveying equipment, etc. Among them, the bitumen melting furnace is one of the most advanced equipments, which can heat solid bitumen to liquid state. In addition, asphalt mixers can mix liquid asphalt with stone to make asphalt concrete. , Asphalt conveying equipment can transport asphalt concrete to the construction site. The selection and use of these equipment are of great significance to ensure the quality of bitumen melting and construction efficiency.

Asphalt spreader vehicle is an intelligent and automated high-tech product that specializes in spreading emulsified asphalt, diluted asphalt, hot asphalt, high-viscosity modified asphalt, etc.
Asphalt spreader is used for spreading the penetration oil, waterproof layer, and bonding layer of the bottom layer of the asphalt pavement of high-grade highways. The spreader consists of a car chassis, an asphalt tank, an asphalt pumping and spraying system, a thermal oil heating system, a hydraulic system, an ignition system, a control system, a pneumatic system, and an operating platform.
Asphalt spreader is cumbersome to operate. On the basis of absorbing various technologies of similar products at home and abroad, it increases the quality technology content of construction and the humanized design of outstanding improvement of construction conditions and construction environment. Its reasonable and reliable design ensures the uniformity of asphalt spreading, the computer control is stable and reliable, and the technical performance of the whole vehicle has reached an advanced level.

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.

Before use, please check whether the position of each valve is accurate and make preparations before work. After starting the motor of the asphalt spreading truck, check the four heat transfer oil valves and air pressure gauge. After everything is normal, start the engine and the power take-off starts to work. Try running the asphalt pump and cycle for 5 minutes. If the pump head shell is hot to your hands, slowly close the thermal oil pump valve. If the heating is insufficient, the pump will not rotate or make noise. You need to open the valve and continue to heat the asphalt pump until it can operate normally.

Synchronized gravel sealing is a process technology for treating cracks in asphalt pavement, and it is currently a road construction and pavement maintenance technology with low energy consumption and high cost performance. Do you know what its six technical features are? If you don’t know, just follow the editor of Sinoroader and take a look.

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.

I believe that many people already know about synchronous gravel sealing. But when asked under what circumstances synchronous gravel sealing is suitable, many people cannot tell.
Under what circumstances is synchronous gravel sealing more suitable? According to the technical specifications for the construction of simultaneous gravel sealing, simultaneous gravel sealing can be used for the following disease types:

From the current point of view, road construction machinery has bottomed out and asphalt meltering equipment has risen rapidly. In recent years, highway construction and maintenance departments have a strong awareness of using asphalt mixing equipment, especially in developed coastal areas such as Beijing, Shanghai, Jiangsu, Zhejiang, etc. In addition, these regions have a fast economic growth rate, relatively developed industry, and strong comprehensive economic strength. Therefore, the consumption of asphalt mixing equipments in these regions has always been at the forefront of the country. With the rapid development of highway construction and the increase in demand for asphalt, barreled asphalt has been widely used for its convenient transportation and easy storage. In particular, most of the high-performance imported asphalt used in high-grade highways is in barrel form, which requires an asphalt meltering equipment with fast melting speed, clean de-barreling, and can prevent asphalt aging. my country’s highway construction has achieved remarkable results, among which mechanized production has contributed greatly. Different types of asphalt mixers and bitumen meltering equipment are selected for the characteristics of large highway pavement construction and tight construction period. With the rapid development of my country’s economy, the further extension of expressways, and the large-scale development of western construction, the central and western regions have become new investment hotspots. While paying attention to the market in the developed eastern regions, domestic road construction machinery manufacturers have also increased their efforts to develop the central and western markets, creating new highlights for the domestic asphalt mixing plants consumer market. In summary, my country’s asphalt mixing plant sales market has begun to move westward with the westward movement of investment hotspots. As the market center of gravity gradually shifts westward, the market in the western region is gradually heating up. The self-heating integrated structure, hot air barrel melting and bitumen barrel flipping technology in the asphalt barrel removal equipment are our company’s self-heating integrated structure. The thermal oil furnace used in the old equipment is perfectly integrated with the asphalt barrel removal equipment body, which reduces the volume of the entire set of equipment, greatly reduces equipment investment, saves equipment space and transfer transportation costs.

Maintenance points of asphalt spreading trucks in different working hours
per month (or every 200 hours worked)；
​Per year (or every 500 hours worked)；
Every two years (or every 1,000 hours worked)；

The application of slurry mixes in highways and municipal engineering projects is of significant importance and widespread practicality. The following is a detailed analysis of their applications in these two areas:
I. Highway Applications
1. Applications of Colored Polymer Slurry Mixtures
Advantages: A variety of colors, environmentally friendly and durable, easy application, fast curing, and wear and skid resistance.
Applications: Colorful highway pavement designs, such as the Beijing-Dezhou Expressway, utilize colored polymer slurry mixes for their pavement design. This creates a visual impact for drivers, relieves fatigue, and serves as a warning.
Effects: Improves the aesthetics and safety of highways, providing drivers with a more comfortable and safe driving environment.
2. Applications of Slurry Seals
Types: Slurry seals primarily include slurry seals and micro-surfacing.
Advantages: Excellent anti-skid properties, waterproofing and anti-seepage properties, rapid application, and cost-effectiveness.

Abstract: Asphalt melting equipment is one of the indispensable equipment in modern road construction. Its main function is to heat a large amount of cold hard asphalt to a suitable working temperature at the construction site. Advanced asphalt melting equipment can greatly improve construction efficiency, reduce human resources and time costs, and ensure pavement quality at the same time.

Emulsified modified asphalt equipment includes sewage treatment, water storage tank, water metering and verification temperature control system, asphalt storage tank, asphalt external temperature control system, hot water pump soap seasoning system, soap storage tank, soap mixing pump, soap external temperature control system and metering and verification system, filter, hot asphalt mixing pump and metering and verification system, pipeline black anti-static tweezers, emulsified asphalt cooling system and retrieval equipment, product tank and electrical control system.
The whole set of procedures is modularized, and customers can freely match and use according to their needs. The application of each part of the equipment is as follows: Sewage treatment system: Mechanically filter and adsorb the general drinking water to react with epoxy resin to convert the strong drinking water into pure softened water, reduce the water holding capacity, and improve the emulsion effect of asphalt or asphalt concrete.

The modified asphalt equipment produced by Sinoroader can produce SBS, rubber powder, SBR, and PE modified asphalt manually and automatically. Some of its configurations and uses are as follows:
1. Filter: The specially made asphalt filter can effectively filter impurities and foreign matter in the high-temperature matrix asphalt to prevent damage to subsequent equipment.
2. Matrix asphalt heater: The spiral plate or shell and tube heat exchanger is used to quickly heat the matrix asphalt through heat transfer oil to meet the needs of the production process. Heating in a sealed tank avoids the aging of asphalt due to long-term high-temperature heating and exposure to the air. The sulfide produced during the production process is quite limited, reducing environmental pollution.
3. Modifier air delivery or spiral addition system: The modifier manually poured into the pouring hopper is delivered to the asphalt batching tank by wind or spiral. It can be equipped with a metering system.
4. Stabilizer automatic or manual addition system: It can be equipped with a metering system.

Asphalt mixing plant is one of the main equipment for producing asphalt concrete. It can mix asphalt, gravel, cement and other materials together in a certain proportion to obtain the products required for highway construction. In order to ensure its operating effect, the asphalt mixing station also needs to be powered on for trial operation before it is officially put into work.

Regarding the basic knowledge of modified bitumen plant, I believe that many consumers have already had a basic understanding of it. Because of the continuous development of various fields today, various facilities including modified bitumen plants have been well developed and applied, and modified bitumen plant has gradually been recognized by customers.
The direct quick heating portable equipment in the modified bitumen equipment not only has a faster heating speed, saves fuel, and is pollution-free, but also convenient and easy to operate. The automatic heating system completely eliminates the trouble of baking or cleaning bitumen and pipelines.

Improve the reliability of SBS bitumen emulsion plants: Once you have an established maintenance, it will help to identify problems. This will allow the maintenance plan and time to be carried out at your convenience. Regular maintenance will increase the normal operation time of SBS bitumen emulsification equipment, and it can be used when necessary. Low cost of operation: Imagine an SBS bitumen emulsification plant breaks down during a project. With a protective maintenance plan, such things happen less often because you have taken good care of the SBS bitumen emulsification plant.
If the SBS bitumen emulsification plant wants to maintain normal operation, then in the production process. All stages need to be maintained normal, among which the normality of the circuit system is an important aspect to ensure its smooth operation. Imagine that if there is a problem with the circuit during the on-site operation, it may affect the development of the entire project.
For users, of course, they don’t expect this to happen, so if the SBS bitumen emulsification plant is in the work of using the SBS bitumen emulsification equipment, if there is a circuit problem, it is necessary to take appropriate measures to solve it in time. The following article will give a detailed description of this problem, and the following SBS bitumen emulsification plant can be of benefit to everyone.

Asphalt emulsifier is an emulsifier that belongs to the category of surfactants and is a raw material for the production of emulsified asphalt.
Emulsifiers are divided into: synthetic emulsifiers, natural emulsifiers, inorganic powder emulsifiers, etc. Currently, synthetic emulsifiers are widely used. Asphalt emulsifier is a type of chemical organically synthesized surfactant.

Changing the color of asphalt pavement is an important project aimed at improving the beauty of roads, optimizing traffic signs and enhancing urban landscape effects. The following is a detailed introduction to the color change of asphalt pavement:
1. Color change method
Using pavement color change spray:
Spray directly on the original asphalt pavement surface to make the road surface look brand new.
This method is simple and fast to construct, with bright and lasting colors, and will not change the structure of the pavement.

Due to the incorporation of a certain proportion of water into the slurry sealing mixture, it is easy to evaporate in the air. After the water is evaporated, it will become dry and hardened. Therefore, after the slurry is formed, it not only looks very similar to fine-grained asphalt concrete, but does not affect the visual appearance of the road. It also has the same technical properties as fine-grained concrete in terms of wear resistance, anti-skid, waterproofing, and smoothness. Slurry seal technology is used in highway pavement maintenance because of its simple construction technology, short construction period, low cost, high quality, wide application, strong adaptability, etc. It is an asphalt with both economy and high efficiency. Pavement maintenance technology is worthy of application and promotion.

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.

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.

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 can be spread by mechanical spreading and manual spreading. Different spreading methods will have different effects on pavement performance, so it is very important to choose the right spreading method. At the same time, maintenance and management after spreading are equally important to ensure the safety and durability of the pavement.
Emulsified asphalt is a common pavement material that is widely used in road construction and maintenance. There are two main ways to spread emulsified asphalt: mechanical spreading and manual spreading. Mechanical spreading generally uses a special spreading vehicle that can quickly and evenly spread emulsified asphalt. Manual spreading is carried out by workers using tools such as brushes or rollers, which is suitable for pavement treatment in small areas or special areas.
Different spreading methods also have different effects on pavement performance. Mechanical spreading can quickly complete large-area treatment and spread evenly, which is conducive to ensuring the flatness and anti-skid properties of the pavement. Manual spreading can more finely treat special areas such as shoulders and intersections to improve the overall performance of the pavement.