Asphalt Pavement Principles: Density and Durability

More than 18 billion tons of asphalt pavement are in place on U.S. roads. Long-lasting asphalt pavements are the result of collaborative partnerships between researchers, manufacturers, paving contractors, and agencies. When striving to make asphalt pavements more durable, research and lessons learned show that density is an important factor. This video talks about several keys to achieving proper asphalt pavement density, as well as new technologies that are moving the asphalt industry forward.

Why Asphalt Paving is the Top Choice For Most Property Owners

Whenever construction-related topics are discussed, the use of asphalt VS concrete always creates a bit of controversy. This is especially true when the discussion focuses on paving. Even the word paving these days is used to describe mostly asphalt. But the truth is pavement is any material used to created roads or driveways. The most common modern paving methods, however, are asphalt and concrete.

Both asphalt and concrete have a long history in the building industry because of the variety of ways the materials can be used. However, in regard to paving parking lots and driveways, the biggest argument has mainly been about initial cost.

Now comes the inevitable question, "Which is the better material for parking lot and driveway surfaces?" The answer may surprise nearly everyone. And if you are a property or business owner, the results documented by industry experts as well as scientific studies are quite revealing.

According to Wikipedia, Discovery.com and Industry Sources, here are the latest findings. We'll start with Concrete Paving:

The Complete Details About Concrete Paving:

• - Concrete is more prone to cracking and buckling because it's rigid and dense design. Tree Roots, Ground Movements, Freeze Thaw Cycles, and soil movement are huge contributors to concretes deterioration.

• - According to the Ohio Highway Commission, concrete costs of $70 to $100 per cubic yard were more than double the costs of asphalt paving. All Ohio highway paving is now done with asphalt.

• - Concrete paving of parking lot and driveway surfaces requires more time and initial cost than asphalt paving. This holds especially true the larger a project gets.

• - Repairs to concrete paving surfaces are more costly to repair than asphalt. They also don't blend as well as asphalt paving does. Especially after asphalt gets freshly seal coated.

• + Concrete paving last far longer than asphalt paving surfaces.

• + Concrete paving maintenance cost over time, is far less expensive than asphalt paving.

• + Concrete paving requires far less on-going maintenance to keep its strength.

The Complete Details About Asphalt Paving:

• - Asphalt requires continual maintenance including seal coating, striping, crack filling, and many other forgotten costs when deciding what type of pavement to install.

• + Asphalt Paving offers more flexibility giving a slight advantage over concrete in terms of handling stress and cracking.

• -+ Asphalt is the easiest to use and most economical pothole repair product available. It can be applied as a cold patch, hot patch, and become a permanent solution for repairing potholes in a shorter amount of time than concrete and other more costly hybrid mixtures. Keep in mind that potholes are far less likely in concrete.

• + In addition to pothole repair, asphalt is used to repair parking lots, driveways, and roadways on a larger scale. The preparation for paving with asphalt is relatively easy, depending on the condition of the surface being covered. Asphalt paving can be done directly over the present pavement in many cases.

• + Asphalt is very strong, durable and weather resistant in addition to being resistant to damaging effects from chemicals

• - Only when the maintenance schedules are kept up.

• + Asphalt sets faster than concrete giving it a strong advantage in both cost and convenience for parking lot and driveway paving.

In summary,

Asphalt:

An environmentally friendly and recyclable paving product that provides many benefits for driveway, road, and parking area applications. With its upfront cost savings, it is by far the more popular choice for parking situations and driveway paving construction. However, those upfront savings are quickly lost within the first 5 years of installation through ongoing and costly asphalt construction projects.

Concrete:

Also highly green in its recyclable qualities. Concrete paving is a long lasting, low maintenance cost product which looks great over time. Although typically more difficult and slightly costlier to repair, when that time comes. Over time the cost to maintain a concrete pavement surface is much lower. Over the life span of 20-30 years, there will be even a larger saving on concrete constructed projects VS its asphalt counterpart.

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How to Protect Your Driveway

Driveway sealing is an easy and cost-effective way to protect and prolong the life of your driveway. Asphalt surfaces are particularly susceptible to wear and tear, both from weather and from automobile traffic, and the grade of asphalt commonly used on driveways is even more so. Driveway sealing at regular intervals gives your driveway the added protection it needs to last longer and resist deterioration.

Needs Regular Upkeep
If you’re not sure on this point, consider the constant upkeep the asphalt roads in your community need in order to stay in good shape. Add to that the fact that the asphalt used on roads is generally a higher grade and made to withstand a higher level of abuse than the asphalt typically used in driveway applications, and you can see why it’s important to keep up on regular maintenance, including asphalt sealing, in order to fend off major projects such as repaving a crumbling asphalt surface.

The Benefits
Sealing your driveway has many benefits when it comes to preserving your concrete driveway. First and foremost, a properly applied driveway sealer repels water, perhaps the single most harmful agent when it comes to deteriorating asphalt surfaces. Concrete has a natural tendency to crack if water is allowed to permeate it, and this tendency is only increased by the weight of cars regularly driving over it. Once those cracks appear, water further damages it, especially in cold climates where it expands and contracts with freezing temperatures.

Other enemies of your driveway include sunlight and oxygen, both of which hasten corrosion. By regularly applying a quality driveway sealer to your concrete you can prevent water, sunlight, and air from permeating your asphalt and prevent these problems. As an added benefit, driveway sealing also repels oil spills and leaks and makes it much easier for you to sweep and clean your driveway surface.

When to Apply
As a general rule, you should seal your driveway every 1 to 3 years. More specifically, if you can see the color of the individual stones that make up your asphalt surface, you know it’s time to seal it up. A few rules apply before you seal, however. For starters, never seal a new asphalt driveway. Asphalt needs a minimum of six months for the oils in it to evaporate. The less oil, the harder the driveway, which is the goal. If you apply driveway sealer before your asphalt has time to cure, it won’t achieve the necessary hardness and all your work will be for naught. Other things to consider are the outside temperature, which must be fifty degrees or higher for the sealer to adhere properly, and the weather. Ideally, you want your sealer to be on your driveway for at least 48 hours before any rain comes down on it.

Talk to a Professional
Driveway sealing is an important aspect of asphalt driveway maintenance, however, it’s not the only thing you need to keep up on. If your driveway has pre-existing cracks, potholes or other signs of wear, it’s vital that you fix those problems before you apply a sealant. That being the case, your best bet is to contact a professional that won’t only apply your sealant, but who will also evaluate your driveway for other maintenance needs that need to be addressed before you perform this necessary task.

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Why Landscaping Experts Recommend Asphalt Sealcoating

Creating a driveway on your property is important to help you protect your lawns. However, when creating driveways or pathways, it is imperative that you make use of durable materials like asphalt.

As of now, asphalt driveways and pathways are very popular. However, there are cases when homeowners may notice unsightly issues. Thus, landscaping experts recommend homeowners to opt for asphalt sealcoating. With this solution, homeowners can obtain wonderful features that can benefit them. Below are some of the following.

To prevent small cracks

One of the reasons why landscaping experts recommend asphalt sealcoating is to prevent small cracks. Cracks on asphalt are caused by numerous factors. These include moisture, ground movements and erosion, excessive weight as well as improper installation. Fortunately, cracks can be eliminated by using sealcoating. This solution can also hide patches and rough areas.

To reduce damages caused by chemicals

The next reason why landscaping experts recommend asphalt sealcoating is to reduce damages caused by chemicals. This is possible since asphalt sealcoating fills surface voids, which reduces exposure to oxygen and UV rays and reduces the depth to which oil or gas can penetrate the asphalt. Other than that, sealcoating can also prevent oxidation and erosion of the top layer and replaces fine particles lost from the asphalt surface due to oxidation on older pavements. And, it also resists gas, diesel fuel, oil, salt and chemical penetration which will break down the bond between the aggregate and the liquid asphalt.

To eliminate water damage

Using asphalt sealcoating can also help homeowners eliminate water damage. Water can easily damage asphalt since it enters the asphalt. Because of this, moisture can be formed which can affect the quality and reliability of asphalt. By using sealcoating, you can prevent water from entering the asphalt since it can protect the surface properly.

To improve aesthetics

With the use of sealcoating homeowners can also improve the aesthetics of their asphalt. Due to aging, the color of the asphalt fades. However, sealcoating can protect its color since this solution is dark and black colored when applied.

To reduce maintenance costs

Finally, landscaping experts can also reduce their maintenance costs when using sealcoating. When it comes to repairs, asphalt repairs can be expensive since you need to hire specialists in order to properly remove cracks and other asphalt issues. On the other hand, sealcoating can easily leave a smooth, clean surface ideal for sweeping, which lowers cleaning costs and for a driveway and gives your entrance a fresh and new look.

These are only some of the benefits that homeowners can obtain when investing in sealcoating solutions from reliable landscaping experts.

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Do You Know The Advantages of Sealcoating?

With warm weather, comes maintenance and repairs to parking lots and driveways. Sealcoating your parking lot or driveway is an easy way to extend the life of asphalt and improve the curb appeal of your property - saving you money in the long run. If sealcoating is avoided, a crack can start forming in the asphalt, which then leads to potholes.

Some benefits of sealcoating asphalt include:

• Reduces long term repair costs
• Accelerates melting of snow and ice on the pavement surface
• Protects your pavement from oxidation, oil and chemical spills
• Protects against water penetration, rain, frost and snow damage
• Enhances the appearance of your building and landscape
• Prolongs pavement life, safeguarding your investment

Article Source: https://www.wolfpaving.com/advantages-of-sealcoating

Will I See the Asphalt Repairs When They’re Done?

One of the most common questions that I'm asked is, “Will I see the repairs when they're done?” My answer is always the same - yes. It's impossible to match old asphalt using new asphalt, even with infrared repairs. How well a repair blends with the surrounding asphalt depends on one main factor, how many times the surrounding asphalt has been sealed. Each time you sealcoat your asphalt, the voids between the aggregate get filled in a little more. The more times a driveway has been sealed, the less texture it has, leaving little chance it will match up with new asphalt that has more texture. Just imagine your old driveway next to a new driveway, that's the difference you will see.

A follow up question I hear a lot is, “Won't it blend in after I sealcoat?” It will blend better with a sealcoat (same color), but the textures will still be different and the repairs will be visible. Asphalt surfaces that have only been sealed a few times can eventually blend in pretty well with a few sealcoats, over a few years. If a new driveway is what you're looking for, you’ll need a paving company that can give you a new driveway. Infrared repairs are a nice option if a large portion of your asphalt is in good shape and you can accept that the repairs will not be invisible.

Article Source: http://www.asphaltadvisor.com/2013/07/will-i-see-asphalt-repairs-when-theyre.html

Asphalt Paving Driveway Maintenance Tips

Asphalt paving or Hot Mix Asphalt is typically what one thinks of when installing driveways of new homes. It is by far one of the least expensive methods for paving a surface in new home construction sites. Properly installed asphalt paved driveways have a life expectancy of about thirty or more years.

These asphalt paved driveways consist of rock particles, sand, and asphalt cement, which make it flexible and durable at the same time. New asphalt is by far the most flexible because it still retains many of the lighter hydrocarbon oils that make up its DNA structure. Crushed gravel makes up the foundation on which the asphalt is laid, to promote stability of the asphalt structure. By laying five to eight inches of gravel beneath the asphalt you are ensuring a greater life expectancy for your asphalt driveway. Also by having your asphalt paving company install your asphalt finish at least one foot before the asphalt covers the gravel, you are allowing your asphalt driveway to not crack when visitors drive to the edge of the finished surface. This will give greater flexibility and allow your asphalt driveway to look as nice as it can for as long as possible. The next step is to seal your asphalt driveway after about six to nine months.

The new asphalt driveway must cure out over that time frame. If sealed to quickly, the hydrocarbon oils that give the asphalt paving its flexibility will cause it to be too flexible, thus, allowing greater marks to exist over time. When it is time to seal your asphalt paved driveway, remember to put at least two coats of high-quality seal coat over the entire driveway. This is to be repeated every three to five years for the maximum life expectancy of your asphalt paved driveway. By being patient and following this advice, your asphalt paved driveway will be around for many years to come. Take good care of it and it will definitely add character to your home. Asphalt paving or Hot Mix Asphalt is and will always be the best alternative for those seeking to pave surfaces in a flexible manner.

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Asphalt Paving and Sealcoating - The Hard Facts of Asphalt Repair

Asphalt Pavement begins to deteriorate as soon as it is laid down. Fuel and lubricants dissolve it, water softens it and sunlight accelerates oxidation to break down the binder. Unsealed blacktop can lose half its thickness in twenty years.

Within a year or so, the original black color begins to pale. The binder asphalt begins to lose plasticity. Hairline cracks form. After five years the entire thickness has oxidized and become brittle. The color is light gray. By the eighth year, cracks extend clear through the pavement. Material is loose on the top. The base fails as water soaks through. Within a year or so, areas with alligatoring cracks become potholes. After fifteen years, the entire surface will have broken up.

DOES YOUR ASPHALT PARKING LOT NEED REPAIRING?

"IMPORTANT REPAIR TIPS"

When was the last time that you thought about your asphalt parking lot and its upkeep? This is the same place where you park your car everyday and the entrance to your home or office. It is a known fact that first impressions are lasting and this is true for your clients or friends when they drive into your parking lot. They are either encouraged to come and visit you or turn around and drive away, depending on the look of your surroundings and yes, this includes your parking lot!

We will first start with a few statistics of asphalt parking lot upkeep. If your asphalt is sealcoated every three years, it will have an average life span of thirty years! If your asphalt is not sealcoated, it will have an average life span of fifteen years. Asphalt repairs can cost as much as much as $6.00 per square foot. Sealcoat can be applied for as little as 8 cents per square foot. It doesn't take a genius to figure out that sealcoating your asphalt every three years prevents major repair costs in future years.
To determine if your parking lot needs any repairing, go take a look at it. Here are a few signs to look for:

1. Rough Asphalt - Is the surface of your asphalt not smooth? Can you see the tops of the rock or aggregate showing through? Are pieces of rock coming out of your asphalt? These are all signs that you need to have your parking lot sealed and repaired. Excessively rough areas usually require installing a new asphalt skin patch prior to sealcoating so that the sealcoat will last when being applied to these areas.

2. Cracked Asphalt - Do you have cracks appearing in your asphalt? These can be caused by either excess water under the parking area or lack of proper sealcoat maintenance over the years. These areas can be repaired by either rubber crack filling or removing and replacing them with new asphalt depending on how severe the damage has been. Cracks can also be caused by tree root pressure.

3. Worn Stripes - Is your parking space striping and stenciling looking worn? Are the old lines appearing through your old sealcoat? These are signs that it is time to sealcoat and re-stripe the parking area. Striping is the most noticeable part of the parking lot and it is very important that you have a neatly done job.

When choosing an asphalt contractor to do the work, make sure you ask for references to previous jobs that were completed. Call those people to see if they were satisfied with the asphalt contractor's work. Remember, price is not everything! Some contractors use better materials and do better work than other contractors.

As a rule of thumb, make sure that the asphalt contractor dilutes the sealcoat with a maximum of 10% water. This way you will get a thicker coat of sealer- and that will last a long time. When your asphalt is severely cracked (alligatored) and needs to be removed and replaced with new asphalt, make sure that the new asphalt is installed to a depth of at least 3 inches. This will usually give you a good solid patch. Remember, first impressions are lasting. People like a clean and well kept parking lot.
Stop... Think About Your Asphalt Driveway!

When was the last time that you thought about your asphalt driveway (the path that leads to your humble home and the place where you park your car)? This article will give you the in's and out's on caring for your asphalt driveway, whether it is new or otherwise.

If you have an asphalt driveway, seal it! The sun and water are your driveway's worst enemies. If you do not regularly seal your driveway, the surface will become rough and the asphalt will start to crack, causing further damage. If your driveway is older, has started to get rough, and is forming small cracks it is even more urgent that you seal it to protect your investment.

If you decide to do the job yourself, you can buy asphalt sealer in five-gallon containers at any of your local lumber companies or home improvement stores. You also need to purchase a special sealer broom to apply the sealer and a paintbrush to cut in along walls and tight areas. Applying the sealer to your driveway can be tricky. You need to apply it in even brush strokes. When it dries it will look just the way you brushed it on. The sealer will dry very fast so you need to work very quickly.

There is a big difference between the sealers that YOU can buy and the sealers that are used by asphalt contractors who seal driveways for a living. The sealers that the asphalt contractors use contain silica sand and/or slate which allows the seal to last about twice as long as the kind purchased at the store. The asphalt contractor uses a mixer machine to keep the aggregates agitated. Otherwise, it would stick like lead to the bottom of the container. If you seal your own driveway, it's good to do it about every year. If you have a contractor do it, have him seal it every three years.

If your driveway is older and has some cracks, it is recommended to fix them before any more damage occurs. Asphalt cracking is caused primarily by the effects of the sun and by moisture. Proper attention to cracks will prevent your driveway from breaking down further and will double the life of your asphalt. If you seal your own cracks, make sure that you buy a crack sealer that has rubber compounds. This type of product allows the crack to expand and contract without breaking open. Rubber crack sealer will flex with the movement of the asphalt and will help prevent water from seeping into the crack. Always seal the cracks before you seal your asphalt driveway. If you hire a contractor to seal your cracks, make sure he uses a rubber based sealer. (Some do not!)

Your driveway is an investment. The better you take care of it, the less it will cost you in the long run. The best thing about a well-maintained driveway is that it looks great and enhances the look of your home.

Does Your Parking Lot Sing the Trash Truck Blues?

I can't count the amount of phone calls that we have received from irate apartment owners. The conversation usually starts out by the owner saying, "Those darn trash trucks are ruining my asphalt parking lot. There are cracks as far as the eye can see and the ground is starting to heave. I'm afraid that one of my tenants is going to fall and brake a leg." As you know, these are all very valid concerns.

Trash trucks are the leading cause of asphalt parking lot damage. Generally, parking lots are not constructed to handle heavy truck traffic. Usually the base material (decomposed granite) on older parking lots has not been installed or has been installed in a very thin layer. The pavement that is laid on top of this base is only as strong as the base material. This can cause premature stress on the asphalt pavement when a heavy truck passes over the surface.

Think about it! One pass of an 18,000 pound load on a single axle truck has the same effect on an asphalt parking lot as 9,600 automobile passes. What does your local trash truck weigh when it is full of wet, smelly, compacted garbage? It usually weighs more than 18,000 pounds. If your trash truck shows up once or twice a week, the damage load can be the equivalent of between 10,000 and 20,000 cars. That's a lot of traffic!

By now, you are probably wondering what you can do about this problem. Depending on your property, there are several measures that you can take to help repair the current damage and limit future trash truck damage.

The first thing that you should do is to repair the damage that the trash truck has caused. This usually requires saw-cutting and removing the damaged asphalt and replacing it with new asphalt to a depth of not less than four inches. The new asphalt patch should always be deeper than your existing asphalt.

If your trash truck damage is not too severe, you can have your damaged areas overlaid with a new layer of Petromat and asphalt. This is less expensive than removing and replacing your asphalt. Petromat is made out of fiberglass and is designed to help prevent your old pavement cracks from coming through the new layer of asphalt. The new layer of asphalt must be a minimum of 1.5 inches deep over the Petromat for maximum effectiveness. Since the level of your existing parking lot will be raised by Petromat patches, you have to make sure that water puddling will not become a problem.
After your asphalt patches have been completed, you should sealcoat and re-stripe your parking lot to keep it looking nice and to help keep your patches tightly locked and waterproof.

The second thing that you should do is to figure out how to help prevent the damage from occurring again! One way to do this is to install concrete pads where the trash trucks cause the most damage. Usually this is in the FRONT of your trash dumpsters. The concrete pads I see are usually too small or are in the wrong location. You need to make sure that the concrete pad is longer than the trash truck and is installed where he stops and picks up your trash dumpster. The reason that this area is subject to the most damage is that the trash truck is stopped causing the most down pressure on your pavement. The truck also shakes and shudders when it is dumping your dumpster which causes additional stress on the area. The concrete pad should be a minimum of six inches deep, using steel rebar and 3,000 PSI concrete.

The third thing that you should do is to review the existing locations of your trash dumpsters. Closer is better! Some apartment properties are situated so that the dumpster areas can be moved closer to the street. Just remember, the closer to the street that you can locate your trash dumpsters, the less it will cost you in parking lot repairs. In most apartment owner cases, this means thousands of dollars $$$ in long term savings.

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Thermoplastics Installing by Vaca Vet Striping

http://vacavetstriping.com/

The application of linear striping, arrows, stop bars, and handicap insignias, etc. We use a plasticized material that when heated with adhere permanently to asphalt and concrete surfaces.

We understand the importance of quality asphalt maintenance and the importance of leaving a lasting impression to prospective tenants, home buyers, customers, and the general public.

Vaca Vet Striping has over 30 years of experience doing business as ACE Paving Company, with a General Engineering Class A Contractor’s License #389714. We strive to provide quality work and great service at an affordable cost. Vaca Vet Striping service area is Solano, Napa, Yolo, and Sacramento counties.

Asphalt Paving: Striping Your Parking Lot

As you may already know, asphalt paved parking lots do need maintenance from time to time. One known asphalt paving maintenance technique is to have your parking lot re-striped to add a nicer look to existing asphalt paving properties.

The repainting (striping) of an asphalt lot usually takes place every one to two years; it mostly depends on the amount of wear and tear made by people driving on the asphalt paved lots. First, the lot must be cleaned and checked to see if there are any major problems with the lot currently.

As a rule of thumb, the number of parking spaces on the lot will typically designate how many handicapped spaces are required. By using high-quality paint when asphalt striping, you will ensure a greater life expectancy of the clean look of your paved lot. The lines have to be as bright as possible for people who will park in between them at a later date. The striping also serves to direct the parking lot traffic to ensure the safety of drivers. You want to make it as easy as possible for drivers to see where they are supposed to go at all given times.

Also, by having very bright yellow speed bumps on your asphalt paved the parking lot, you make it safer for those who will not be in cars as well. Also, the proper signs must be displayed on the parking lots as well, i.e., crosswalks, loading zone, and handicapped signs. The lines that will be put on the parking lot will first be chalked to ensure a clean straight look when the work is done.

Furthermore, a walk behind style striping machine will be used to get the best-painted lines that are approximately 6 millimeters when dry. The lines cannot be driven on until the paint has had adequate time to fully dry (at least 30 minutes).

When the asphalt parking lot has been stripped, any debris that is on the lot will be collected and taken away from the property.

The final stage of the asphalt striping is to put up barricades to keep other drivers from entering or exiting your asphalt parking lot. Striping is a great way to keep a parking lot looking new and professional. Costs spent in advance for asphalt striping now will definitely be lower as compared to later. Always take a proactive approach to asphalt paving maintenance. Those who choose not to take good care of their lots will pay the price in the long run. Customers always appreciate a well designed and painted parking lot. It is the first thing that customers see when visiting your property, so it should look great. A freshly striped asphalt parking lot can lead to a positive overall impression of your property.

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