About the Asphalt Paver
You may own a commercial property with a parking lot on it or perhaps just a very simple residence containing a driveway. If this is the case, it is a must to apply asphalt paving to improve its overall structure.
What is asphalt paving?
Asphalt is a sustainable and the most versatile material used to surface roadways, driveways, parking lots and other construction projects. It is composed of sand, stone, gravel, and liquid (petroleum) asphalt.
Pavement is a superficial covering or a hardscape used to keep the ground surface at its very best performance and appearance. Asphalt paving is one of the most economical solutions for paving any driving surfaces.
All asphalt is not the same. It can be made in many different ways. Depending upon how it’s made determines the quality of the material, thus it’s important that you ask for or specify a quality designed mix when dealing with your paver or contractor.
Asphalt costs vary depending on your geographical location. On average, it will be between $4 to $8 per square foot. Proper maintenance such as regular sealcoating and resurfacing are the key to ensuring longevity with asphalt surfaces.
After your initial installation happens, about every 3 years, you should expect to do a resurfacing. For a long period of time, it’s going to develop cracks and you have to apply a rubberized compound to stop the cracks from spreading and spidering throughout the surface. In addition, asphalt naturally contains oils and is black when healthy. Over time, exposure to the environment and daily wear and tear causes it to oxidize, become gray and get certain damages. You can prevent these damages by sealing the driveway.
To replace an existing pavement, the following steps must be executed to ensure a smooth, seamless process;
- Prepare the ground for grading.
- Constructing the base and sub-base to support the weight of the pavement.
- Apply courses of asphalt and make sure they are rolled and compacted.
- Ensure that there is no improper drainage.
Asphalt is generally preferred by many consumers in various applications such as paving and finishing due to their many advantages. These include the following;
- Asphalt is a durable, resilient and affordable servicing option that can be installed quickly. With proper maintenance, asphalt surfaces can last 20 to 25 year on average.
- It’s essential to protect your pavement from any damage and to save money from doing repairs which may include total replacement of the surface. Asphalt paving can protect the overall pavement from the harsh effects of the environment and the activities of the people.
- Paving your surface is indeed necessary to maintain the good condition of your pavement and to make it last for long.
- It’s cost-effective. If the driveway is already asphalt, 9 times out of 10 it can be resurfaced, unlike concrete that requires complete removal.
Using asphalt service thus makes the process of maintaining commercial properties relatively easy and cost-effective. In the residential areas, the use of asphalt improves the overall safety of the home. For commercial areas, it provides a safe base and quiet pavement.
Things To Know About Asphalt Repair
Did you just have your driveway repaved with a brand new asphalt overlay? Or maybe a new layer of sealcoat? Or perhaps you are a company owner that just finished construction on a new commercial parking lot? Either way, you may start to notice tire marks as business or traffic picks up. Tire scuff marks are a common occurrence to newly-paved or seal-coated asphalt, and for many reasons. Before you pick up the phone to have a word with your paving company, it is encouraged to investigate a bit further, and find out why tire marks appear on newly-paved asphalt in the first place. Continue reading to learn what causes asphalt tire scuffing, and gain a better understanding of what to expect from your pavement.
Fortunately, there is no need to panic about tire marks since they will eventually fade after a few months. There are several reasons why freshly-paved or seal-coated asphalt is subject to tire scuffing, but they can all be narrowed down to five specific ones. If you have questions about any of these causes, feel free to contact your paving company afterwards to discuss them in detail. They can give you expert information, answers, and advice regarding asphalt paving, sealcoating, and more. For now, start by reviewing the 5 most common factors that cause asphalt tire marks, below.
1. The Age of Pavement - New pavement, or pavement with a new layer of sealcoat, is more susceptible to tire scuff marks since it is still soft and malleable. As it hardens, tire marks begin to disappear. Asphalt requires flexibility to maintain maximum durability, but as it ages, it loses this attribute.
2. Outdoor Temperatures - The time of year affects the rate at which asphalt hardens after being laid. Hot weather will slow the curing process, keeping pavement soft and flexible a little longer than usual. And we already mentioned that soft pavement allows for tire marks. This is why most paving jobs are carried out in the fall and winter, when temperatures are cooler and pavement cures faster.
3. Vehicle Weight - New asphalt pavement that experiences frequent traffic from heavy vehicles, like trucks, buses, and vans, is more susceptible to tire scuffing. Stationary 180-degree turns, sudden braking, sharp turns, and trucks with power steering are common causes for tire marks..
4. Type of Tires - The type and size of tires play a major role in producing tire scuff marks in new pavement. Most standard tires can and will cause this to happen, but tires with aggressive tread patterns, steel-belted radial tires, and off-road trucks and SUVs will guarantee it.
5. Type of Asphalt - The type of asphalt will also influence the likelihood of tire scuffing on new pavement. Course aggregate is less likely to scuff, whereas, a thin sealcoat will.
Decorative Edging on Asphalt Driveways Serves An Important Purpose
Paving contractors, road builders and even government agencies are turning to Roller Compacted Concrete as the pavement of choice in larger numbers as the acceptance of Roller Compacted Concrete, also known as RCC, grows across the United States. RCC offers unique qualities different from traditional concrete or asphalt that make the pavement an economical, fast-construction candidate for many applications previously reserved for asphalt or conventional concrete.
RCC has been traditionally been used for surfaces carrying heavy loads at low speeds because of its relative coarse texture, but in recent years RCC has been selected as the pavement of choice for a greater number of commercial and industrial applications. Cities such as Columbus Ohio have begun using Roller Compacted Concrete for residential streets, and Atlanta Georgia has used RCC for interstate shoulder construction. RCC is primarily used in the construction of industrial and commercial parking areas and low traffic road surfaces.
Typical applications of RCC include:
- Industrial access roads and parking areas
- Shipping yards and ports
- Truck and freight terminals and distribution centers
- Bulk commodity storage and compost areas
- Aircraft parking areas
- Urban, rural and park roadways
- Large commercial parking lots
- Temporary travel lanes
RCC is also being used in pavement systems for higher traffic speeds serving as base for traditional concrete or the lower lift in a two lift paving operation.
There are many benefits to the use of roller compacted concrete, but the main factor is the RCC can be constructed faster and cheaper than traditional concrete and multiple lift asphalt pavements. RCC can be constructed fast because it is typically placed with asphalt type paver equipped with a standard or high density screed, then compacted with rollers. Unlike conventional concrete the use of forms, dowels, reinforcing steel and vibration are not used. Additionally transverse joints are not required, however when project specifies they must be present the joints are spaced farther apart than conventional concrete.
The cost savings associated with RCC is attributed not only to the ease of construction, but the material also uses less Portland Cement the most expensive ingredient in conventional concrete. The specific savings associated with the use of roller compacted concrete is dependent on the complexity of the construction, size of the project and specified mix design.
Additional benefits of RCC - Roller Compacted Concrete
- Durability and resistance to chemical attack
- High freeze-thaw durability even without the use of air entrainment
- High strength capable of supporting heavy repetitive loads without failure
- Reduced cracking and shrinking
- Rigid surface eliminating rutting except in areas of heavy tire chain or studded tire use
- Resists abrasion even under heavy traffic loads and volume
- Light colored surface reduces the required lighting for parking and storage areas
- Light vehicles and cars can travel on RCC soon after completion
While the benefits of RCC are numerous it is important to understand there are also some limitations to the use of roller compacted concrete. For example the production of large quantities of RCC requires specialized equipment. While a transit mix truck can mix RCC the mixing time is significantly longer than conventional concrete and the amount of RCC than can be mixed in the truck is reduced because the dryness of the RCC mix. Also the surface of RCC may not be suitable for high speed traffic without diamond grinding.
Other limitations of RCC
- Adjacent slabs and multiple horizontal lifts must be place within an hour to ensure good bonding unless a cold joint is planned
- Pavement edges are more difficult to compact causing most specification to require 96% modified proctor density on cold joints
- Admixture usage on RCC may be higher than traditional concrete because of the dryness of the material
- RCC paving in hot weather requires extra attention to reduce the possibility of water loss and evaporation
When considering the versatility of RCC, its ease of application in comparison to conventional concrete and its durability as compared to asphalt it becomes clear the roller compacted concrete is a suitable paving substitute. When considering the rising cost of oil and petroleum based products such as asphalt it becomes clear that RCC is likely the paving material of the future.
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