Asphalt spreader is an irreplaceable tool for highway maintenance

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.

Friends who are ready to get started have a surprise today. The editor will give you a brief introduction on how to produce emulsified asphalt.

In the cold winter, the following points should be noted when using bitumen melter equipment:

1. Keep warm: The bitumen melter equipment needs to be operated indoors or in a place with sunshade facilities, and ensure that the temperature of the bitumen melter and the surrounding environment is kept within an appropriate range.
2. Check the bitumen melting equipment: Before use, the bitumen melter should be checked, including whether the circuit, liquid circuit and other parts of the equipment are working properly, and whether the equipment has leakage, water leakage and other conditions.
3. Pay attention to safety: During operation, protective bitumen melter equipment should be worn to avoid direct contact with hot bitumen. At the same time, avoid overloading the bitumen melter to prevent equipment damage and safety accidents.
4. Control speed: Reasonably control the working speed of the bitumen melting equipment according to weather conditions and road conditions to avoid overheating of the equipment, which may cause the bitumen to flow too quickly or burn.
5. Storage conditions: When not in use, place the equipment in a dry, ventilated and moderately warm place, and ensure that the residue in the equipment is completely cleaned.

How to reduce the energy consumption of emulsified asphalt production equipment is a concern of many users, and is also an issue that many manufacturers attach great importance to. Therefore, today Sinoroader, as a manufacturer of emulsified asphalt production equipment, would like to take this opportunity to share with you how to reduce the production of emulsified asphalt. Equipment energy consumption method.
Since emulsified asphalt appears as a finished product in emulsified asphalt production equipment, and the outlet temperature of ordinary emulsified asphalt is about 85°C, the outlet temperature of emulsified modified asphalt is above 95°C, so there is a lot of latent heat in emulsified asphalt, but emulsified asphalt The production equipment does not make good use of them, but directly enters the finished product tank, allowing the heat to be lost at will, resulting in a waste of energy.

Preventive pavement maintenance is a periodic mandatory maintenance measure, which is taken to restore the pavement surface service function when the pavement structure strength is sufficient and only the surface function is attenuated. New preventive maintenance technologies such as super-viscous fiber-added low-noise micro-surfacing and synchronous gravel seal have been widely used on the main lines of national highways, and the construction effect has been widely praised by customers.
Super-viscous fiber-added low-noise micro-surfacing starts with the gradation of micro-surfacing and the main material modified emulsified asphalt. By reducing the structural depth of the micro-surfacing and changing the distribution state of the coarse and fine materials on the surface of the micro-surfacing, the driving noise is reduced, while ensuring its anti-skid performance, effectively improving its adhesion, waterproofness, durability and crack resistance, and can solve the defects of easy detachment, excessive noise and reflective cracks of ordinary micro-surfacing.

Asphalt melting equipment follows the continuous development of urbanization. Whether in rural areas or in big cities, you can see a lot of construction sites, among which it is inevitable that asphalt melting equipment is set up nearby. Asphalt melting equipment manufacturers, whether large or small asphalt melting equipment or relatively large and small, although it is just a simple mechanical equipment, but to move or transport it, it is a small matter, and there are many places that require attention.
The technical level of the asphalt melting equipment disassembly and assembly team directly affects the disassembly and assembly progress of the asphalt melting equipment; improve on-site supervision, reasonably organize disassembly and assembly machinery and equipment and workers, try to avoid cross-operation, and promote the disassembly and assembly process to consume less manpower and machinery shifts to do a good job in the transportation of asphalt melting equipment; ensure that the asphalt melting equipment is not damaged and the prefabricated components are not missed.

1 Common diseases of asphalt pavement
There are nine phenomena of early damage to asphalt pavement: rutting, cracks, and potholes. These diseases are the most common and serious, and are one of the common quality problems of highway projects.
1.1 Rutting
Rutting refers to the longitudinal strip grooves on the road surface along the wheel tracks, with a depth of more than 1.5cm. Rutting is a strip groove formed by the accumulation of permanent deformation of the road surface under the repeated action of vehicle load. Rutting reduces the smoothness of the road surface. When the rutting reaches a certain depth, due to the accumulation of water in the rutting, it is easy for cars to slide and cause traffic accidents. The main reasons for rutting are unreasonable design and serious overloading of vehicles.
1.2 Cracks
There are three main forms of cracks: longitudinal cracks, transverse cracks and mesh cracks. When cracks occur in asphalt pavement, water seepage occurs, which harms the surface layer and base layer.
1.3 Potholes
Potholes are common early diseases of asphalt pavement, which refer to the road surface being damaged into potholes with a depth of more than 2cm and an area of ??more than 0.04㎡. The main reason for the formation of potholes is that the oil used in vehicle repair or motor vehicles seeps into the road surface, polluting the asphalt mixture and causing it to loosen. The pits are gradually formed by driving and rolling.

With reliable performance and stable benchmark quality, Sinoroader slurry sealer is favored by customers and was once in short supply. Sinoroader slurry sealer uses emulsified asphalt, which can reduce the sensitivity of construction temperature and effectively extend the construction time. Sinoroader slurry sealer has fast molding, improves construction speed, shortens road construction time, and reduces the manpower and material resources required for construction. In addition, in terms of energy saving and consumption reduction, Sinoroader slurry sealer can be constructed at room temperature, achieving “0 release” of harmful gases, reducing air pollution, and is very green and environmentally friendly.

What key points should be paid attention to when feeding emulsified asphalt equipment? When it comes to emulsified asphalt equipment, I don’t know how much you know about it? What should you pay attention to when adding materials?
The black anti-static tweezers grinding wheel of the emulsified asphalt equipment does not have a heated collet. Before use, you must add the appropriate amount of diesel and let the black anti-static tweezers circulate for 3 to 5 minutes to generate heat (the temperature after operation is 80 ~100 degrees) open the stop valve on the oil delivery pipe to drain the diesel engine in the engine. The temperature of the black anti-static tweezers grinding wheel must be around 80 to 100 degrees before the material can be loaded and put into production. If there is a heated collet, the grinding wheel must be heated before starting, and then the material is loaded and put into production.

The base layer of asphalt pavement is divided into semi-rigid and rigid. Since the base layer and the surface layer are materials of different properties, good bonding and continuity between the two are the key requirements for this type of pavement. In addition, when the asphalt surface layer seeps water, most of the water will be concentrated at the joint between the surface layer and the base layer, causing damage such as slurry, looseness, and potholes to the asphalt pavement. Therefore, adding a lower seal layer on top of a semi-rigid or rigid base layer will play a vital role in enhancing the strength, stability and waterproofing capabilities of the pavement structural layer. The more commonly used one is to use asphalt gravel synchronous sealing technology.
So let’s take a look at how the construction of the asphalt gravel synchronous sealing truck is carried out:

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.

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.

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.

Bitumen emulsion equipment is widely used in new technologies and new processes for preventive maintenance. Bitumen emulsion plant is an emulsion at room temperature formed by dispersing bitumen into the water phase. It is a new material that is made of natural materials. It is different from traditional Compared with hot bitumen, it saves more than 50% of energy, saves 10%-20% of bitumen, and causes less pollution.

Everyone has a side of themselves that they don’t want others to know. As a preventive road maintenance technology, slurry sealing has some shortcomings. do you think so?
Slurry seal is a kind of road protection that uses special equipment to mix emulsified asphalt, water, additives, aggregates, fillers and other ingredients in a certain proportion, and then mixes the slurry mixture onto the original road surface to form a thin layer. Maintenance technology. These are all well known. The editor will not go into details on this.

Classification analysis of emulsion bitumen equipment is used to heat-melt bitumen. According to the actual cutting effect of mechanical equipment, it is loosened into a solution with demulsifier in the form of tiny droplets to form oil-in-water asphalt. Industrial equipment for lotions. Emulsion bitumen equipment can be divided into three types: portable, transportable and mobile according to the equipment, layout and maneuverability of the equipment.

Except for the first application, for enterprises whose block asphalt melting equipment license has expired and continue to engage in the production and operation of block asphalt melting equipment, they should apply for the relevant matters of postponement and renewal 45 working days before the expiration of the license.
The block asphalt melting equipment should first prepare the block asphalt melting equipment application materials, and then submit an application for postponement and renewal to the municipal environmental protection bureau. According to the production and operation of the block asphalt melting equipment and environmental protection work of the applicant enterprise, the municipal environmental protection bureau of the district where the block asphalt melting equipment is located will provide a review opinion in the form of a public document.
For the block asphalt melting equipment, the Provincial Environmental Protection Department will review the application materials, and appoint the Provincial Block Asphalt Melting Equipment Management Office to organize relevant doctors to conduct technical evaluation and on-site technical evaluation, and produce expert technical evaluation opinions and on-site inspection reports. Then report the materials of the block asphalt melting equipment to the meeting of directors for scientific research and make a review decision.

Everyone must be familiar with slurry sealing and micro-surfacing. But do you know their 7 construction steps?
Slurry sealing and micro-surfacing were both early preventative highway protection technologies. Its function is to ensure the smooth use and extended life of the highway. The construction steps are as follows:

There are certain standards for the composition and mix ratio of micro-surfacing, and a wide range of materials are used, including polymer-modified emulsified asphalt, various aggregates, cement, water, additives, etc. Raw material quality has a significant impact on microsurfacing performance, so understanding the performance of each component and the key factors that influence its performance is critical to ensuring the quality of your microsurfacing mix.

The container-type emulsified bitumen equipment hot-melts the base cold-mix colored bitumen and disperses it through the equipment into small cold-mix colored bitumen particles in an aqueous solution containing emulsifier to form a liquid cold-mix colored bitumen material.

Modified bitumen equipment uses modified bitumen colloid mill. Its blade has high hardness, high linear speed of the moving disk, and the gap can be adjusted to 0.15mm. It is suitable for processing various polymer-modified bitumens, such as SBS, PE, EVA, etc.

Based on the characteristics of the high-speed hot mixed bitumen melting equipment, the direct heating bitumen melter equipment tank is a researched, environmentally friendly and energy-saving thermal mixed bitumen melting equipment, which can directly coordinate the temperature of the direct heating bitumen melter heating tank and protect the direct heating asphalt melter equipment. Barrel heating tank. The temperature of hot mixed asphalt barrels achieves the appropriate storage temperature.
When the water level in the drum is lower than the temperature of the thermometer, please close the suction valve before the drum pump is shut down to prevent the drum from flowing back in the heater. After the motor has been running for 2 days, the three-way valve opens quickly.

With the rapid development of our country’s social development and the continuous development of economic and information technology, modern highway construction is also developing rapidly, and the requirements for ground structural materials are becoming higher and higher, and Asphalt concrete bonding raw materials are inseparable from modified asphalt equipment. So besides these influencing factors, what other reasons does the company have that people don’t understand? Let’s analyze it together.
There are some asphalt concrete equipment on the market, because they have not solved the problem of asphalt clogging before grinding, there are not enough preparation equipment and grinding equipment, the structure is unscientific, and the entire grinding process cannot achieve a certain particle size, resulting in modification. The product productivity of asphalt equipment is low and the product quality is unstable. It requires continuous grinding for a long time, creating problems. This will not only greatly increase energy consumption, increase costs, make product quality unstable, and affect the speed of highway construction.

Modified (rubber powder) bitumen equipment, one of the road maintenance equipment. It is a kind of equipment that measures, mixes and develops SBS, rubber powder and asphalt.
Modified (rubber powder) bitumen equipment is a set of wet modification processing technology, which mainly consists of modified material metering and promotion, bitumen rapid heating, asphalt metering, high-intensity mixing tank, mixed material transfer pump, development tank, colloid mill, Control system and other components.

The selection of asphalt melting equipment should take into account factors such as the use environment, working conditions, and technical requirements. Common ones include hot oil heating equipment, electric heating equipment, and gas heating equipment.
Hot oil heating equipment is suitable for occasions that require long-term heating and high temperature control accuracy;
Electric heating equipment is suitable for small projects or occasions where temperature control accuracy is not required;
Gas heating equipment has the advantages of simple operation and low cost, but safety protection measures must be strictly followed.
When choosing, it is also necessary to comprehensively consider factors such as economy and environmental protection.

Precautions during the production of emulsified bitumen equipment. How much do you know about this information? Let’s learn more about it:
When the emulsified bitumen equipment is in production, the viscosity of the bitumen decreases with the increase of temperature. For every 12℃ increase, its dynamic viscosity decreases by about one time. During production, the base bitumen should be heated to liquid state before emulsification. In addition, in order to adapt to the emulsification capacity of the colloid mill, the base bitumen dynamic viscosity is generally controlled to be about 200cst. The lower the temperature, the higher the viscosity, which increases the burden on the bitumen pump and the colloid mill, making it difficult to emulsify; but on the other hand, in order to prevent the demulsification caused by excessive vaporization and evaporation of water in the finished product during the production of emulsified bitumen, it is impossible to heat the base bitumen temperature too high. Generally, the finished product temperature at the outlet of the colloid mill should be controlled to be less than 85℃.

After the rubber bitumen storage tank is cleaned, the wood chips are sent to the rubber bitumen storage tank, and the wood chips and the bottom of the rubber bitumen storage tank are wiped with wood chips. The dirt and wood chips in the bitumen tank can be weathered naturally. The rubber bitumen storage tank is not allowed to be damaged. Check the technical specifications of the underwater concrete processing equipment and ventilation equipment.
The bottom of the rubber bitumen storage tank drain pipe is discharged from the drainage pipe, and the waste water is discharged into the empty tank or other containers through the inlet and outlet and the self-draining pipe. Open the Shenzhen manhole into the plastic suction pipe and pave the Shenzhen manhole with asbestos to reduce the discharge of oil and gas. When manually pumping the bottom oil, two people should be operated to improve the labor efficiency of the workers and send the fuel tank to supervision.

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.

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.

Fillers used in emulsion bitumen equipment are generally divided into two types: chemically active and non-chemically active. In the production of emulsion bitumen equipment, it can improve the stability of the slurry mixture, speed up or slow down the demulsification speed, and improve the strength of the sealing layer. When adding chemically active fillers, the reaction and compatibility of the fillers with mineral materials and modified emulsion bitumen should be fully considered.