Mastering the Art of Asphalt Paving: A Step-by-Step Guide to Adjusting the Conveyor Chain

Whether you’re a seasoned professional in the construction industry or a novice looking to delve into the world of asphalt paving, understanding the intricacies of equipment maintenance is crucial for achieving optimal results.

We will focus on a key component of asphalt pavers – the conveyor flight chain – and walk you through the step-by-step process of adjusting it. Discover how to adjust your conveyor chains and unlock the secrets to perfecting your asphalt paving technique.

Understanding the Conveyor Chain System

The conveyor flight chain plays a crucial role in operating an asphalt paver. It transfers the hot mix asphalt material from the hopper to the augers and screed, ensuring a continuous flow throughout the paving process. The conveyor chain system consists of several key components:

  • Chain Links: Chain links are interconnected metal segments that form a continuous loop. They are designed to withstand the hot mix asphalt material’s high temperatures and abrasive nature.
  • Flight Bars: Flight Bars are the metal slats connected at either end to the two flight chains. These bars are what moves the material on your machine.
  • Sprockets: Sprockets are toothed wheels that engage with the chain links. They provide the driving force for the conveyor flight chain, causing it to move and transport the asphalt material from the hopper to the screed.
  • Tensioning Mechanisms: Tensioning mechanisms are responsible for maintaining the proper tension in the conveyor chain. They ensure the chain is neither loose nor tight, which is crucial for its smooth operation. 

Assessing the Need for Adjustment

Before delving into the step-by-step process of adjusting the conveyor chain in an asphalt paver, it is essential to understand the signs that indicate the need for adjustment. Some common indicators of an improperly adjusted conveyor chain include rough or jerky movement of the chains, excessive chain wear, and abnormal noises during operation.

A misaligned chain can significantly impact paving performance, leading to issues like material spillage, inconsistent mat thickness, and reduced productivity.

Preparing for Adjustment

Before starting the adjustment process for the conveyor chain in an asphalt paver, it is essential to take necessary safety precautions and gather the required equipment. Safety should always be a top priority, so ensure the paver is turned off and follow lockout/tagout procedures to prevent accidental startup. Read and follow guidelines, warnings, and adjustment steps in the Safety and Operations or service manual for your machine.

Additionally, identify the specific adjustment points for the conveyor chain, which may vary depending on the paver model. For example, it could involve locating tensioning bolts or hydraulic systems, allowing precise chain tension adjustment. By taking these necessary precautions and preparing the required tools, you can confidently and effectively prepare the machine for the conveyor chain for adjustment.

Measuring Conveyor Chain Tension

Proper tension in the conveyor chain of an asphalt paver is vital for smooth and efficient operation. Incorrect tension or slack can result in chain slippage, binding, and premature wear or damage to components. 

There are different methods for measuring chain tension, including manual measurement and a tension gauge. Manual measurement involves applying pressure to the chain and assessing the deflection, while a tension gauge provides a more precise and consistent size.

Adjusting the Conveyor Chain Tension

Adjusting the chain tension in an asphalt paver requires a systematic approach. The following step-by-step process can help you achieve the desired tension:

  1. Begin by loosen the tensioning mechanisms, such as bolts or hydraulic systems. It will allow you to make adjustments to the chain tension more easily.
  2. Adjust the tension evenly along the conveyor chain. Depending on the paver model, this may involve simultaneously tightening or loosening the tensioning mechanisms on both sides of the chain. Aim for a balanced and consistent tension throughout the chain’s length.
  3. Check the chain tension using the method outlined in your Safety and Operations or service manual. It can include manual measurement by applying pressure to the chain and assessing its deflection or using a tension gauge for more precise and standardized measures. Ensure that the tension aligns with the manufacturer’s recommended specifications.
  4. If necessary, repeat the process of loosening, adjusting, and checking the tension until the desired tension is achieved. It’s essential to be patient and meticulous during this process to tension the chain properly.
  5. Once proper tension has been achieved, tighten all adjusters and fasteners removed during the process.

Aligning the Conveyor Chain

Proper alignment of the conveyor chain in an asphalt paver is crucial for its smooth operation and to prevent unnecessary wear and damage. Misalignment can lead to uneven stress distribution, increased friction, and accelerated chain wear. To ensure the chain is aligned correctly, inspect it visually and check for any signs of misalignment, such as skewed or twisted links. If misalignment is detected, make the necessary adjustments by loosening the mounting bolts and realigning the chain to the correct position.

Lubricating the Conveyor Chain

Lubrication helps reduce friction, prevent wear, and ensure smooth operation. When it comes to lubricating the conveyor chain, it is recommended to use high-quality chain lubricants specifically designed for the conditions of asphalt paving. 

These lubricants tend to withstand high temperatures, resist water and contaminants, and provide excellent adhesion to the chain. If available, the lubricant should be applied evenly along the chain, either manually or using automatic lubrication systems.

Verifying Conveyor Chain Alignment and Tension

After adjusting the alignment and tension of the conveyor chain in an asphalt paver, it is crucial to verify the effectiveness of the adjustments. Conduct a post-adjustment check to ensure the chain is aligned correctly, with all links in their correct positions and no signs of misalignment. 

Test the chain under load conditions to confirm that it operates smoothly and without issues. First watch chains run unloaded for any issues. Loaded can be checked by running the paver and observing the chain’s performance while paving asphalt.

Troubleshooting Common Issues

In using an asphalt paver, issues may arise with the conveyor chain, impacting its performance. Two common problems include excessive wear and chain jumping or skipping. In addition, excessive wear may occur due to inadequate lubrication or misalignment, and addressing these factors can help mitigate the issue. 

Chain jumping or skipping can result from incorrect tension or damaged sprockets, and adjustments or replacements may be necessary. Inconsistent tension across the chain can also cause problems, requiring careful assessment and adjustments. Questions should be referred to your manufacturer’s technical support team.

Maintenance and Inspection Guidelines

Establishing a regular maintenance schedule is crucial for ensuring the longevity and optimal performance of the conveyor chain in an asphalt paver. This schedule should include routine inspections to identify signs of wear, damage, or misalignment in the chain. In addition, inspecting the chain allows for timely repairs or adjustments to prevent further issues. 

Additionally, preparing for routine maintenance tasks is essential to gathering the necessary tools, lubricants, and replacement parts beforehand.

Best Practices for Conveyor Chain Adjustment

It is essential to follow some best practices to ensure efficient and effective adjustment of the conveyor chain in an asphalt paver. Regularly monitor the chain tension, alignment, and overall performance to catch any issues early on. 

Establish appropriate intervals for adjustment based on the manufacturer’s recommendations and the specific operating conditions of your paver. It is also beneficial to document the adjustments and maintenance performed, including the dates and details of the procedures.

Ensuring Operator Safety

Ensuring operator safety is paramount when performing conveyor chain adjustments in an asphalt paver. Operators should wear appropriate protective gear, such as safety glasses, gloves, and steel-toe boots, to protect themselves from hazards. It is also essential to follow safety guidelines and procedures provided by the equipment manufacturer. 

It includes proper lockout/tagout procedures and ensuring the equipment is powered off and isolated before starting any adjustment tasks. All safety devices outlined in your Safety and Operations manual such as props, hydraulic locks, chains, jack stands, wood blocks etc. should be employed to support components being serviced. By prioritizing operator safety, we can minimize the risk of accidents and create a safe working environment during the conveyor chain adjustment process.


Following the techniques and best practices outlined in this guide can enhance your asphalt paving projects’ performance, longevity, and quality. Remember to prioritize regular maintenance, inspections, and safety precautions to ensure optimal results. 

If you’re looking for top-notch asphalt paving equipment, we recommend checking out LeeBoy. Contact us and take your asphalt paving endeavors to the next level.

How Does an Asphalt Paver Work?

Asphalt paving is essential to everyday life, so it’s no surprise that asphalt pavers are seen working on countless highways and streets. But how does a paver work? What makes them such an effective tool in the construction industry? In this blog, we’ll explore what precisely an asphalt paver is and how it works to ensure roads stay sturdy and safe for travel. 

We’ll also look at some of the features that have made these machines indispensable in modern engineering projects. So if you’re wondering what goes into ensuring our roadways last through rain or shine, read ahead to learn more.

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Asphalt Paving Process

The asphalt paving process involves several steps, including grading and preparing the surface, applying a base and binder layer, and finally, adding the top layer of asphalt. It takes skilled workers, specialized equipment, and attention to detail to ensure a successful, long-lasting paved surface. 

One key component of this process is using an asphalt paver, which ensures an even and precise application of the asphalt. Without it, the paving process would be much less efficient and could result in an uneven and unsafe surface.

Components of an Asphalt Paver

An asphalt paver is an essential piece of equipment used in road construction that plays a crucial role in applying asphalt on roads, highways, and parking lots. Here are the main components of an asphalt paver and their functions:

Hopper – This is a large container located at the front of the paver where the asphalt mix is stored before it is moved by the conveyor chains to the screed. Hydraulically folding hopper wings located on either side make room for dump trucks and increase hopper capacity. They fold in to deliver the last bit of asphalt to the conveyor and make a smaller package for transport. The open design allows the asphalt truck to empty its contents directly into the paver’s hopper.

Conveyor System – The conveyor system transfers the asphalt mix from the hopper to the screed. The conveyor consists of a series of heavy-duty chains and flight bars that move the material at a constant speed. Operation is usually handled by an automatic feed control system such as cut off paddles or switches.

Screed – This is the most critical component of the asphalt paver because it determines the smoothness and uniformity of the final pavement. The screed is pulled by a screed arm located on each side of the paver. The screed plate is responsible for spreading the asphalt mix evenly over the surface, and it’s adjustable to allow for different material depths, widths, and grades.

Augers – These screw-like components are located at the rear of the conveyor in front of the screed and control the amount of asphalt mix delivered to the screed extensions. Augers help to ensure that the head of material is uniform and level across the screed’s entire width. On wide conveyor pavers augers do not need to be used when paving at standard paving width.

Types of Asphalt Pavers

Asphalt pavers come in different types depending on the type of work they are suitable for. Here are the main types of asphalt pavers and their advantages:

1. Tracked Pavers – These pavers are designed for large road construction projects that require high precision and efficiency. They are powered by tracks, providing better traction and stability on unimproved surfaces than wheeled pavers. Tracked pavers are also suitable for working on steeper slopes and soft surfaces.

2. Wheeled Pavers – These pavers are suitable for road construction and maintenance projects on improved surfaces that require flexibility and ease of movement. They are powered by wheels, which makes them more mobile than tracked pavers. Also, wheeled pavers can be driven faster on public highways, making them ideal for road maintenance work.

3. Asphalt Pavers with Bolt-On Screed Extensions – These pavers have screeds that can be extended horizontally. This extension creates wider screeds, which leads to increased paving widths. They are ideal for large road construction projects that require wide paved areas like airport runways or bus stations.

4. Mini Pavers – These are small and suitable for paving narrow, tight spaces. Primarily you will see them used to pave behind a milling machine since their tracks can fit inside a 4ft milling cut. They are also perfect for small repair projects like patches, bike lanes, cart paths, and parking lots. Mini pavers are also highly maneuverable and can work in areas with limited access.

Preparing the Surface for Paving

Before paving a new surface, it’s essential to ensure you’ve adequately prepared the area to prevent any future problems. Properly preparing the surface is critical because if you don’t, it can result in a subpar finish and could even cause the pavement to start cracking and breaking apart after just a short time. 

The best way to prepare the area is by following specific steps, including cleaning the surface, removing debris or objects, and fixing any issues such as tire ruts, potholes, or cracks. Think of it like cooking a meal – if you don’t follow the recipe correctly, you’ll end up with an unappetizing dish. 

Placing and Spreading Asphalt

Laying asphalt involves using an asphalt paver, a machine designed to spread the material evenly and smoothly over the surface. The paver delivers material to the screed evenly to ensure it flows well and adheres to the base layer. The operator controls the speed and direction of the paver to ensure the asphalt is spread consistently. 

Proper placement and spreading are crucial to ensure that the road or pavement is level and has maximum durability. Uneven or lumpy areas can cause water accumulation, leading to damage and potholes.

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Compacting the Asphalt

Compacting the asphalt ensures that it is appropriately integrated and tightly packed, creating a smooth, durable surface resistant to water, cracks, and potholes. Different types of compactors are used in asphalt paving, and each has unique advantages. Vibratory rollers, for instance, are suitable for compacting the newly laid mat. Pneumatic tire rollers that use only tires contribute to the final finish of the last layer by improving its density, reducing voids, and perfecting the finish.

Maintaining the Asphalt Paver

Maintaining an asphalt paver is crucial to ensuring its longevity and efficiency. Proper maintenance saves you money on repairs down the line and keeps your equipment running smoothly, which translates to better performance on the job. 

Some of the essential maintenance tasks for your asphalt paver include removing asphalt buildup, lubricating moving parts, monitoring hydraulic and electrical systems, cleaning and inspecting filters, and checking the condition of the screed plates. Inspection and cleaning of the paver’s crawler tracks and hydraulic drives regularly. Regular inspection, servicing, and repair of your asphalt paver helps prevent breakdowns, extends the lifespan of the equipment, and ultimately enhances your productivity.

Troubleshooting Common Issues

As with any equipment, asphalt pavers can experience different issues during operation. However, here are some common issues and steps to troubleshoot them:

Uneven Asphalt Surface

Uneven asphalt surfaces can be caused by excessive screed angle-of-attack adjustment, improper or uneven head of material, or inconsistent paving speed. To fix these issues, wait multiple paver lengths between angle-of-attack adjustments, adjust conveyor and auger speeds to even head of material, and maintain a consistent paving speed. Use of automatic screed control systems (also called automatic grade control) can help you maintain a consistent grade. These systems can also control slope using slope sensors mounted on the screed.

Low Pavement Density

Low pavement density can be caused by insufficient compaction, incorrect material gradation, and incorrect temperature. To fix this issue, increase compaction efforts, ensure the correct material gradation, and check that the asphalt in your dump truck is at the correct temperature.

Poor Asphalt Mat Finish

Poor asphalt mat finish can occur due to insufficient screed heat, insufficient screed vibration, incorrect material temperature, low quality asphalt mixtures, and incorrect tractor and screed settings. To fix this issue, increase screed temperature, check material temperature in dump truck, turn on screed vibrator, and adjust equipment settings. It could be necessary to have a qualified technician perform screed leveling to get your machine back to factory adjustment.

Asphalt Segregation

Segregation occurs when the different materials in the asphalt mix separate. This issue can be caused by improper mix design, incorrect handling of the combination, or incorrect equipment settings. To fix this issue, redesign the asphalt mix, ensure proper mix handling, and adjust the equipment settings.

Conveyor Issues

Conveyor issues can be caused by material build-up in the hopper or conveyor plates, incorrect chain tension, and insufficient lubrication. To fix this issue, clean the hopper and conveyor chains, adjust chain tension, and properly lubricate the equipment.

Safety Precautions

Safety precautions, including asphalt paving, are crucial when working on any construction project. These precautions help to reduce the risk of accidents, injuries, and fatalities. Here are some of the safety gear and equipment required for asphalt paving:

  • Personal Protective Equipment (PPE) – Safety vests, hard hats, long sleeve shirts, long work pants, safety glasses, steel-toe boots, and gloves are some of the essential protective gear your company may specify for workers when asphalt paving.
  • Traffic Control Devices – include cones, barricades, and signs to alert pedestrians and drivers of ongoing construction work and avoid accidents.
  • First Aid Equipment – A first aid kit should be available on the job site and easily accessible in an emergency.
  • Fire Extinguishers – Fire extinguishers should be placed in strategic locations on the job site.
  • Equipment Safety Features – Asphalt pavers should have all safety features in good working order such as backup alarms, warning decals, and flashing beacon lights. Operations & Service manual should be kept with the machine for reference.
  • Training – Workers should receive appropriate training from their company on operating equipment, using safety gear, following the Operations & Service Manual, and identifying other potential jobsite hazards.

Benefits of Using an Asphalt Paver

Using an asphalt paver offers many benefits that other paving methods cannot compare to. One of the most notable is the durability and longevity it provides. Asphalt has been known to last 20 years or more with proper maintenance, making it a cost-effective choice in the long run. 

In addition to its durability, the smooth surface it creates is also a significant advantage, as it allows for better traction and improved ride quality. Furthermore, compared to other methods like concrete or gravel, asphalt pavers are quicker to set up and complete, leading to less traffic disruption and faster project completion. 

Environmental Impact

Asphalt paving equipment’s impact on the environment can be minimized. Tier 4 Final diesel engines reduce NOx emissions using DEF fluid injected into the exhaust SCR. These same Tier 4 Final engines reduce particulate matter by trapping them in the DPF or diesel particulate filter. Unburned hydrocarbons are minimized by the DOC or diesel oxidation catalyst. Older tiered engines with none of these emissions control components should be kept in good running condition so they will perform at their highest efficiency. Consider shutting off your engines when waiting on more trucks or during other breaks in production.

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Future of Asphalt Paving

The future of asphalt paving looks promising as emerging technologies and advancements continue to improve the industry. Recent developments include using recycled materials, new binding agents, and advanced equipment that makes the process more efficient and environmentally friendly.


Understanding how an asphalt paver works and the components involved in the process can help you appreciate the complexity of this vital task. Whether you’re a construction professional or simply interested in learning more, knowing about the advancements in the industry can be beneficial. 

If you’re looking for high-quality tools and equipment for your asphalt paving needs, consider checking out LeeBoy. We are a reliable partner for your paving needs with a wide range of products and services. Don’t hesitate to contact us for any questions or assistance with your paving projects.

Don’t Let Alligator Cracks Ruin Your Asphalt – Here’s How to Fix Them

Have you ever noticed large cracks in your asphalt pavement? If so, you’re probably dealing with alligator cracks, a common sight on many driveways and parking lots, making the environment look unsightly and even become dangerous if left unattended. But don’t let these menacing cracks ruin your pavement’s appearance. Instead, you can take steps to prevent them from occurring and repair them if they’ve already started.

In this blog post, we’ll cover everything you need to know about alligator cracks: what causes cracked asphalt, how to prevent their occurrence, and the best ways how to fix alligator cracks in asphalt. So keep reading for more information about keeping your asphalt looking its best.

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Identify the Cause of Alligator Cracks

Alligator cracks are a type of asphalt pavement failure that can occur for a variety of reasons, and here are some of them:

  1. Moisture in the pavement: Excess moisture can cause cracks to form due to the weakening of the pavement material.
  2. Poor draining or runoff conditions: If water cannot flow away from the pavement, it can seep into the surface and cause alligator cracks.
  3. Temperature changes: Extremely hot and cold temperatures can cause expansion and contraction of the asphalt, leading to cracking.
  4. Heavy loads: Vehicles with heavy loads can cause sinkage in the pavement, creating an uneven surface that causes alligator cracks.
  5. Poor construction: Incorrect installation methods or poor choice of materials can lead to premature deterioration and alligator cracking of asphalt pavements.

If you notice alligator cracks in your asphalt, it’s crucial to inspect the area to determine the underlying cause so that you can take steps to fix the problem.


If you’re dealing with alligator cracks on your asphalt, you want to ensure it gets handled properly. Before proceeding with repairs, thoroughly clean the debris and loose materials area. Cleaning will help ensure that your repair lasts long into the future. Then you’re ready to start filling in any large potholes or depressions before you apply the material needed to restore your asphalt surfaces to their original condition. Taking these extra steps can ensure that your asphalt is left looking firm, flat, and safe when installation is complete.

Repair Methods

Alligator cracks are particularly stubborn among asphalt repairs, so don’t let them take control of your property – here’s how to fight back! The two main methods of repairing alligator cracks are patching and filling. Let’s discuss their differences.

  • Patching – This method involves cutting out the area affected by alligator cracks and replacing it with new asphalt that blends nicely with your surface, restoring its smoothness and appearance. 
  • Filling – This involves applying a sealant or hot rubberized crack filler to the damaged area. This method prevents weeds and water from seeping below the surface and causing further damage. 

Don’t let alligator cracks get you down. Instead, check out these repair methods and see how to restore your pavement to its original form.

Application Process


  1. Clean the damaged area to remove any dirt, debris, or oil.
  2. Cut out any loose pieces of asphalt and discard them.
  3. Use a hand tamper to compact the hole’s edges in the pavement.
  4. Spread asphalt patch material into the hole until it is filled and leveled with the surrounding pavement surface.
  5. Compact the patch using a hand tamper or a commercial roller compactor for more extensive repairs.
  6. Finish off by applying an asphalt coating over the patch to protect it from wear and tear due to weather and traffic conditions.


  1. Gather materials, including asphalt sealant, a trowel or putty knife, and plywood (for larger areas).
  2. Clean away all dirt, debris, and oil from the affected area before applying sealant with a trowel or putty knife in thin, even layers that overlap each other slightly along the edges so that there are no gaps between applications of the material.
  3. Use plywood to press hard into the area when covering large sections for a smooth finish with minimal air bubbles or holes for water infiltration that could cause further damage later on down the road if left unattended now.
  4. Allow time for sealant application to dry based on product instructions before driving over the patched area again and enjoying the newly repaired road surface!

Tips for achieving a smooth and even finish:

• Take your time when cleaning, measuring/cutting out pieces of asphalt/sealant, pressing sealants onto porous surfaces (which may require multiple layers) as well as smoothing these same applications for optimal results—rushing through any part of this process is likely to leave you with an uneven finish at best!

• When applying sealants pay special attention to making sure they don’t become too thin – otherwise, they won’t stick properly when drying, which can create weaknesses in your repair job!

• After finishing up but before allowing time for dryness, make sure all surfaces are free from dirt/debris that may have been transferred while working (to avoid contaminating the final result).

Meanwhile, following the manufacturer’s instructions is essential to repair alligator cracks properly. Different types of asphalt repairs using fillers and patching require different approaches and techniques. Failure to follow the manufacturer’s guidelines can lead to several problems, including an uneven finish, an improper seal between the repair area and surrounding pavement, water infiltration and potentially further damage, or even more expensive repairs.

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Fortunately, there are preventative measures you can take to reduce your risk of alligator cracking in the future.

Regular maintenance inspections and repairs will go a long way in preserving your asphalt pavement. Be sure to look for loose or sunken patches that may indicate underlying issues with your asphalt and address them as soon as possible. Additionally, ensuring proper drainage around the asphalt is key to preventing alligator fractures from forming. Ensure that gutters, downspouts, and other drainage outlets are clear so that any standing water can flow away quickly and not pool around the edges of your pavement.

By following these simple steps, you can significantly reduce your risk of developing costly alligator cracks in the future and preserve your investment for years to come!


Alligator cracks, fatigue, or crocodile cracking are unsightly and potentially costly issues that plague asphalt surfaces. If left unaddressed, alligator cracks can quickly expand and become even more challenging to repair. It’s, therefore, important to immediately attend to any signs of alligator cracking to prevent further damage from occurring.

Are you looking for an expert to help you with your paving needs? Look no further than LeeBoy! Our top-notch asphalt and maintenance equipment is designed to meet all of our customers’ needs. Reach out to your local dealer today to find out more about our services.

The Road to Durability: All About Hot Mix Asphalt

Hot mix asphalt (HMA) is a composite material composed of aggregates, binders, and fillers heated and mixed in a plant to create an asphalt mixture. The mixture is then placed into storage silos and transported to the construction site, where it is laid on roads or parking lots using specialized equipment. 

The first recorded use of asphalt as a road-building material in Babylon. The ancient Greeks were also familiar with asphalt. The word asphalt comes from the Greek “asphaltos,” meaning “secure.” The Romans used it to seal their baths, reservoirs and aqueducts. As technology advanced, so did HMA production processes and formulations. Today, HMA mixtures are produced in a wide range of thicknesses, textures, designs, and sizes to meet the specific needs of different projects.

This article will discuss hot-mix asphalt and why it’s an effective choice for roadway applications. Then, we’ll walk through the process of making and installing hot mix asphalt, so you can understand why it’s one of the most popular surfacing methods today.

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Components of Hot Mix Asphalt (HMA)

Understanding the different components of hot mix asphalt will make your next project more accessible and cost-effective by ensuring you have enough of each part for a successful application. First, we’ll look at the components that make up Hot Mix Asphalt, so you can better understand how to get the most out of your project’s asphalt installation.


Aggregates are one of the key components in hot mix asphalt. This aggregate combines sand and gravel, rocks, and other materials, creating a solid mixture that can withstand heavy loads and low temperatures. The size of these aggregates also affects the quality of the asphalt, with smaller particles providing an improved ability to hold together during compaction.


The binder is a thin film of asphalt cement that coats the aggregate between each stone particle. It acts like an adhesive, ‘gluing’ together all the elements during compaction, ensuring the asphalt does not break apart when exposed to pressure or movement. Furthermore, it helps protect the mixture from water damage, improving the resistance of the asphalt against wear and tear from weather exposure.


Additives are an integral component of hot-mix asphalt. These materials are added during the mixing process to improve the asphalt’s durability and performance. Common additives include polymers, fibers, and waxes, which can modify rheology and viscosity on the molecular level; antistripping agents, which can reduce moisture absorption properties and help protect against damage caused by wear and oxidation; as well as softening agents to reduce stiffness and enhance elasticity.

Hot Mix Asphalt Production

Let’s look at the production of hot mix asphalt to understand what goes into the process and why it’s an excellent choice for your pavement project.

Aggregate preparation

The first step in the process is aggregate preparation. Aggregates such as crushed gravel, stone, and sand can be sourced from local quarries and mixed in various ratios depending on the end product desired when hot mixed. Then, to achieve a homogeneous blend, the aggregates are dried and heated to high temperatures before being combined with a specific polymer-based binder. 

Once properly prepared, pressure from a moving conveyor belt feeds the mixture into an asphalt plant, where liquid bitumen is added for binding purposes before the hot mix asphalt is ready for paving projects.

Binder preparation

Asphalt binders connect each aggregate particle and guarantee that the finished product can withstand heavy traffic and weather conditions. With proper preparation and treatment, the asphalt binder would be dense enough to compact and create a cohesive surface properly. That’s why binder preparation involves several steps, including heating, drying, measuring, and mixing components such as waste oil or recycled solids with asphalt cement before being used in paving projects.

Mixing process

Mixing is fundamental for obtaining an ideal asphalt product with uniform consistency. It is achieved by thoroughly blending liquids, solids, additives, and polymers with fine aggregate. Temperature is controlled to maintain the optimal state for incorporating all components within specification requirements for compacting strength, stability, workability, and durability.

Benefits of Hot Mix Asphalt

Hot mix asphalt has numerous benefits, ranging from its ability to withstand heavy traffic loads to its resistance to weathering and cracking. Discover why this powerful and durable material has become an essential tool in today’s construction world – from longevity and convenience to cost savings.


Hot Mix Asphalt (HMA) is a robust paving material known for its durability and longevity on roadways. When installed and maintained correctly, HMA pavements can last up to 25 years! The hot mix manufacturing process allows asphalt producers to create the perfect combination of materials that will deliver enhanced performance and extend the pavement’s service life, resulting in less maintenance and repair costs over time.

Skid Resistance

One of its essential benefits is skid resistance. This quality makes sure that the car or truck tires have enough traction to allow drivers to stop instantly when needed due to rain or other wet weather conditions. Additionally, it helps decrease the likelihood of slipping and skidding on roads with frequent traffic or fast speeds. Finally, it can be essential for unexpected events like emergency vehicles needing to pass through.


Hot Mix Asphalt (HMA) has many benefits. Among the most significant is its smoothness. It makes HMA a popular road construction option because it gives motorists a much more comfortable ride than traditional asphalt. The combination of aggregate, sand, and asphalt binder used to make HMA is an adequate cushion for drivers, absorbing shock from potholes and other imperfections in the roadway.


Hot mix asphalt is a cost-effective solution for construction projects for several reasons. Firstly, it has a relatively low initial cost compared to other pavement materials like concrete. Therefore, construction companies can save money on the upfront cost of their projects by using hot-mix asphalt. Additionally, hot mix asphalt requires less maintenance compared to other materials, which helps reduce long-term costs.

Hot Mix Asphalt Applications

Highway Construction

Hot mix asphalt has become essential for highway construction, offering many advantages. Whether used as the primary surface layer or as part of the pavement’s base, its properties make it an invaluable asset when providing a durable, long-lasting roadway system. Because hot mix asphalt consists of 95% aggregate and 5% bitumen, it provides flexibility and durability in terms of bearing load and movement without cracking.

Airport Runways

One of their most common uses is to construct and maintain airport runways. Creating new runways with Hot Mix Asphalt offers superior strength and stability and superior performance during strenuous activities like the constant take-offs and landings associated with airports. The strength of asphalt also helps support larger aircraft compared to other building materials.

Parking lots

Hot mix asphalt is famous for parking lots due to its durability, low maintenance requirements, and aesthetic appeal. However, parking lots are subject to heavy vehicle traffic and exposure to the elements, making it essential to use a material that can withstand this constant wear and tear.


Hot mix asphalt is the key to ensuring racetracks provide a smooth, consistent surface that can withstand high speeds and heavy loads from racing vehicles. Not only does its flexibility allow it to absorb the impacts of extreme speed without cracking or breaking, but hot mix asphalt also has resilience, so it won’t wear down too quickly – ensuring every race runs as smoothly as possible.

Challenges and Limitations

There are particular challenges associated with using this material that contractors should consider before beginning any project. Next, we will look at some potential limitations of working with HMA – so you can make an informed decision when selecting the right option for your construction endeavor. Keep reading to learn more.

Temperature constraints

Temperature constraints are a fundamental challenge; overworking this material due to excessively high temperatures can cause structural deficiencies and uneven paving. To create a quality product, hot mix asphalt needs to stay between 275-300 degrees Fahrenheit during the laying process; anything higher or lower can compromise its integrity.

Seasonal limitations

Cold weather climates can be exceptionally unpredictable and vary significantly through different seasons. If the temperature is too low, HMA will cool down too quickly and can become less durable if applied while cold. 

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Environmental considerations

Hot mix asphalt has environmental considerations. For example, the construction and production of hot mix asphalt produce carbon dioxide and other greenhouse gasses commonly associated with air pollution.


To ensure you get the most out of your hot mix asphalt project, consider using LeeBoy’s innovative machines and services – they offer superior quality and service, along with unbeatable warranties on their products. With LeeBoy hot mix asphalt paving equipment, you can guarantee that you won’t miss a beat on your road construction projects, so you can continue traveling with peace of mind that your roadways are durable and reliable.

Asphalt Paver Maintenance Tips: Maximize Your Equipment Performance

As asphalt paving is an important task for ensuring roads and pathways are safe, reliable, and long-lasting, asphalt pavers tend to be quite expensive investments. Despite the higher initial cost of asphalt pavers, regular maintenance is necessary to ensure longevity and proper performance, which in turn can guarantee the success of your asphalt paving job. Although pavement equipment is made to endure harsh conditions outdoors, properly caring for asphalt paving equipment will ultimately save you time, money, and effort in the long run.

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Why Is It Important to Have a Routine Maintenance For Asphalt Paver

Routine maintenance is an essential part of ensuring an asphalt paver is operating in optimal condition. Routine maintenance checks can identify and correct minor issues before they become more serious, leading to costly repairs down the line. Routine maintenance can also help with increasing an asphalt paver’s lifespan by properly lubricating its moving parts, replacing worn-out components, and reducing wear and tear on its highly calibrated tools.

6 Tips To Maintain Your Asphalt Paver

Keeping an asphalt paver running optimally is essential for efficiency and safety on any job site. With a little work each day, an asphalt paver can operate at its peak performance every time. Here are a few ways you can maintain your asphalt paver to ensure it keeps operating in good condition:

Inspect Your Asphalt Paver With Daily Maintenance Checks

When using an asphalt paver, it is important to perform daily maintenance checks every morning before beginning operation. Inspecting the machine can help you spot small problems that lead to bigger issues over time. These checks should include looking for damage, worn-out parts, loose fasteners, oil leaks, and other missing components. 

Taking care of these needed repairs or replacements can save money when these preventable issues cause bigger problems down the line. Doing your daily maintenance checks isn’t just about keeping your asphalt paver running smoothly; it also ensures consistent pavement quality and a safer job site for all workers on the project.

Clean Your Paver Every Day

Making sure to clean your asphalt paver at the end of each day is essential for a variety of reasons. Not only will it reduce wear and tear on vital parts, but it can also result in higher-quality asphalt paving jobs. If you leave cold asphalt chunks on the paver, they could end up getting mixed in with new asphalt and cause inconsistencies or even break the machine. Cleaning your equipment may seem bothersome after a long day of working hard, but it’s an important step that will ensure your paver remains effective and efficient for many years to come.

Perform Off-Season Maintenance

Routine maintenance during the off-season of a paver is essential for keeping it running efficiently throughout the entire paving season. It allows you to ensure your machine is operating as expected and prevent any costly emergency repairs. You can give it a deep clean, flush out hydraulic systems and inspect all moving parts. Doing so will allow you to remain ahead of any potential problems that could come up when you’re out on the job.

Mind The Screed 

When asphalt pavers are inactive during the off-season, it’s especially important to pay attention to their maintenance. The screed should be taken care of first and foremost; checking its alignment and ensuring that there are no cracks or imperfections. Measuring plate thickness, conducting an ultrasound test to check for debris, and taking a look at the slide track and heating elements should all take place during asphalt paver maintenance. 

Removing the screed cover and eliminating any pre-existing debris is also necessary to ensure top performance. Mind your screed year-round for a great asphalt paver performance.

Preventative Care Will Keep Your Paver Running

Routine preventative care for your asphalt paver is the key to continued reliable and efficient operation. Scheduling regular service intervals that may involve replacing suspect parts, and regularly changing engine oil and filters, fuel filters, separators, and hydraulic filters will all help keep your asphalt paver running smoothly. Additionally, it’s important to keep up with lubricating moving parts, which should become a habit if you are serious about preventative maintenance. 

Training is Key

Asphalt paving operations can be highly complex, especially when considering asphalt paver maintenance. When a person isn’t adequately trained in asphalt paver operation and maintenance, the risks can be great. Without proper training, operators may not know how to correctly execute asphalt paving tasks which can lead to serious issues such as component failure or structural damage. To prevent these types of issues, asphalt paver crews need to have proper training before attempting any asphalt paving project. 

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The Best Equipment Providers for Professional Asphalt Maintenance Solutions

When it comes to asphalt paver maintenance, LeeBoy is the go-to brand in North Carolina. We provide hassle-free asphalt repair and maintenance services anywhere you need them. From our years of experience in the asphalt industry, we know exactly how to get asphalt pavers up and running quickly and efficiently with minimal downtime. 
With LeeBoy, you can also find the best asphalt pavers retailers and local dealers in the market for any type of paving job that might arise. No matter what asphalt job you’re doing in NC, look to LeeBoy first for your asphalt maintenance, equipment, and repair needs.