Home » Products » Bitumen Processing » Asphalt pavement spreader operation skills

Asphalt pavement spreader operation skills

Recently, I found that many people don’t know much about the operation skills of asphalt pavement spreaders. If you also want to know what’s going on, you can read this introduction below.
Asphalt pavement spreaders are an indispensable and important equipment in road maintenance and construction. Their operation skills directly affect construction efficiency and project quality. The following introduces the operation skills of asphalt pavement spreaders from four aspects: pre-operation preparation, precautions during construction, spreading skills, and post-operation cleaning and maintenance:

Rated 4.6/5 based on 582 customer reviews
Share:
Content

Recently, I found that many people don’t know much about the operation skills of asphalt pavement spreaders. If you also want to know what’s going on, you can read this introduction below.
Asphalt pavement spreaders are an indispensable and important equipment in road maintenance and construction. Their operation skills directly affect construction efficiency and project quality. The following introduces the operation skills of asphalt pavement spreaders from four aspects: pre-operation preparation, precautions during construction, spreading skills, and post-operation cleaning and maintenance:
I. Pre-operation preparation:
1. Confirm whether the mechanical structure and control system of the asphalt spreader are normal, including nozzles, conveying systems, heating devices, etc.
2. Select the appropriate asphalt type and spreading amount according to construction requirements to ensure construction quality and efficiency.
3. Check the oil volume and normal working status of the vehicle’s oil, water, hydraulic oil and other lubrication and cooling systems.
II. Precautions during construction:
1. During the construction process, adjust the spraying width and asphalt thickness of the nozzle according to the actual road conditions and project requirements to ensure uniform coverage of the road surface.
2. Pay attention to the coordination of vehicle speed and spraying speed to avoid waste or insufficient construction caused by excessive or insufficient asphalt flow.
3. Pay attention to the temperature and humidity during construction to avoid construction under bad weather conditions, which will affect the quality of asphalt and road adhesion.
III. Spreading skills:
1. Control the speed of the spreader and keep it stable to ensure that the asphalt is evenly spread on the road.
2. According to the actual situation and design requirements of the road, adjust the angle and spraying range of the nozzle to ensure uniform coverage and thickness.
3. During the construction process, adjust the spraying width and thickness as needed to ensure the accuracy and efficiency of the construction.
IV. Cleaning and maintenance after operation:
1. After the construction is completed, clean the nozzle, delivery pipeline, asphalt tank and other components of the spreader in time to prevent asphalt residue from affecting the quality of the next construction.
2. Regularly maintain the spreader, including lubrication, replacement of worn parts, etc., to extend the service life of the equipment and ensure the quality of construction.
3. Regularly inspect and troubleshoot the spreader to detect and solve equipment problems in a timely manner to ensure the continuity and safety of construction.
The introduction of the above operating skills can help operators better master the operating points of asphalt pavement spreaders, improve construction efficiency and quality, and ensure the smooth progress of road maintenance and construction projects.

Inquiry


    More Road Maintenance

    What are the methods for repairing cracks in asphalt pavement? Asphalt pavement is a widely used pavement material in modern road construction, with high strength and durability. However, as time goes by and the frequency of use increases, cracks will inevitably appear in asphalt pavement. So, what are the methods for repairing cracks in asphalt pavement?
    What are the methods for repairing cracks in asphalt pavement?
    1. Oil filling repair method
    This repair method is mainly for smaller cracks or cracks. First, clean the damaged part, then soften the asphalt pavement with a liquefied gas tank, and then pour the thick asphalt into the cracks, and flatten it with a soldering iron, and then carry out normal pavement maintenance. The oil filling repair method is one of the methods for repairing cracks in asphalt pavement, and it is also one of the most commonly used repair methods.
    2. Emulsified asphalt seal repair method
    This method is mainly for minor cracks or loose cracks. Use a machine to apply a layer of emulsified asphalt on the ground, then sprinkle some stone chips, and finally roll it. This repair method can be constructed on rainy days, with a fast construction speed, and can handle minor crack problems.
    3. Cold-patch asphalt mixture repair method
    Cold-patch asphalt mixture is one of the asphalt pavement repair materials with good adhesion, wear resistance, and skid resistance. This material is suitable for the repair of various asphalt pavements. It is easy to use and can be quickly opened to traffic after repair, reducing construction time. The color of the cold-patch asphalt mixture is also very different from the original pavement, which can be clearly distinguished and convenient for construction operations.

    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.

    The function of slurry seal is to use appropriately graded stone chips or sand, fillers (cement, lime, fly ash, stone powder, etc.) and emulsified asphalt, admixtures and water, and mix them in a certain proportion to form a flowing asphalt mixture, which is evenly spread on the road surface to form an asphalt seal. This seal is mainly used for roads in rainy areas, especially when the gaps in the asphalt surface layer are large and easy to seep water, the slurry seal can effectively solve this problem.
    In addition, after the base layer is laid, if the asphalt surface layer cannot be laid in time and traffic needs to be opened, the slurry seal also plays a key role. It can temporarily close the road surface to prevent rainwater from penetrating, while protecting the base layer from damage. The slurry seal has strong fluidity and can better adapt to various road conditions to ensure construction quality and efficiency.
    Compared with the viscous seal, the slurry seal has higher adaptability and flexibility. Due to its poor fluidity, the viscous seal is more difficult to spread evenly during construction, and it is more likely to flow in a humid environment, affecting the construction effect. The slurry seal, due to its strong fluidity, can better cover the entire road surface and ensure the uniformity and integrity of the seal.
    In practical applications, the slurry seal also has the advantages of fast construction speed and low cost. Due to its good fluidity, less equipment and manpower are required during construction, which greatly shortens the construction period. In addition, the material cost of the slurry seal is relatively low, which effectively controls the overall construction cost.
    Therefore, when choosing the seal material, the slurry seal has become a more ideal choice due to its excellent performance and economy. Whether it is for road maintenance in rainy areas or for base protection, the slurry seal can play an important role in ensuring the safety and service life of the road.

    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: