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Posts Tagged ‘Overlay’

Maryland Sealcoating Service: The Benefits of Sealcoating Your Asphalt Parking Lot

Friday, January 6th, 2012

Asphalt parking lot maintenance is important. But of all the precautions you can take to ensure your parking surface lasts for a long time, sealcoating is perhaps the most important. If applied properly and at the right time, sealcoating provides the following benefits:

Slows Oxidation and Water Penetration: Over exposure to oxygen will harden asphalt binders, resulting in brittle pavement prone to cracking. And cracking allows water to seep into the asphalt sub base, further weakening the entire parking surface. This leads to more cracks, potholes, and eventual total parking lot failure.

Sealcoats fill surface voids, reducing exposure to oxygen and water and prolonging pavement life.

Protects Pavement Against Ultraviolet Rays: The sun’s rays can break the links between carbon bonds and your asphalt. Sealcoat prevent ultraviolet rays from further damaging the asphalt pavement.

Protects Against Spills: Gas and oil spills can soften asphalt, making it more susceptible to other damage. Sealcoating reduces the depth to which oil or gas can penetrate.

Easy to Clean Pavement: Sealcoating results in a smooth, even texture allowing for much easier cleaning.

Increased Pavement Flexibility: Sealcoating keeps your parking lot black. This attracts more heat from the sun, which, in turn, makes your parking surface more pliable and increasingly able it is to withstand traffic volume changes without cracking.

Beauty: Well, this one is a given.

Cost Effective: It is far less expensive to sealcoat your parking lot every few years than it would be to overlay or completely replace your parking surface.

If you have any questions, contact an experienced asphalt company today – a company like PTG Enterprises. The asphalt experts here have managed hundreds of pavement sealcoat projects and have the experience you need. So contact PTG Enterprises aka My Pavement Guy today by calling 410-636-8777 or click here today!

There are many different options available to property managers and owners today than there were when I started in the Industry. This works to the advantage of the property and to the pavement. Now, depending on the current condition of the asphalt, I have the ability to recommend several different options depending on the condition of the lot, previous maintenance schedules and budgets. The cost of sealcoating is only pennies a square yard versus repairs and rehabilitation which can be as much as twenty times higher.

Give me the opportunity to impress you. I can be your one stop ‘Pavement Guy,’ for any pavement project regardless of size or scope.

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Sources:

Asphalt Pavement Maintenance 101

The Asphalt Driveway Repair Process

Friday, November 25th, 2011

Is your asphalt driveway in desperate need of repair? Well, the only way to truly rehabilitate your parking pad is to hire a professional asphalt contractor to come in, assess the situation, and repair the problem.

While you can attempt small do-it-yourself asphalt patching jobs on your own, these will be little more than temporary solutions. In the end, the only way to truly repair your driveway is to have an asphalt professional, like PTG Enterprises, handle the project.

Here at PTG Enterprises, we adhere to the following Asphalt Driveway Repair Process:

1. Pre-Construction

The purpose of a pre-construction meeting is to clearly communicate expectation levels and set a time to allow a question and answer session. A successful pre-construction meeting results in everyone leaving with a clear understanding of what’s going to happen and when it’s happening. Most of the time, this information is discussed at the time of estimate.

2. Traffic Controls

Usually this consists of cones and caution tape. We will place cones around construction vehicles and at both ends of the work zone. Maintaining the safety on a work zone is of the utmost importance. Once the driveway repairs have been completed, caution tape will be placed across the entrance to allow the asphalt time to cure.

3. Base Patching – (IF NEEDED)

As described in several places through-out this website, most patching is conducted the same way. The damaged asphalt is excavated, in this case to the sub-grade stone, and all damaged asphalt is removed from site and disposed of at a recycling plant. Assuming the sub-grade is stable, (see “Undercutting” if not), new asphalt is installed within the excavated area and compacted within industry standards. With base patching, the finished grade of the patch is even with either the old existing pavement that is about to be overlaid or even with the milled out elevation of the parking lot. In both cases, base patching is designed to repair isolated damaged areas prior to an overlay.

4. Undercutting / Stone Replacement – (IF NEEDED)

Soft spot or unstable soil is usually easy to see and evaluate. A simple on-site test is a proof roll. For this you take a fully loaded dump truck (approx. 50,000 pounds) and drive it over the area. In smaller areas, a bobcat will work. If the truck / bobcat cause deflections or makes deep wheel rut impressions in the sub-grade, you have a soft spot. The area is excavated as needed until a stable soil is reached and all debris is removed from site. New stone is then reinstalled in lifts, building the area back up to pre-construction elevations. The area is then capped with base course asphalt if overlay is to follow or base and surface course asphalt if it is to be a finished patch.

5. Asphalt Installation

The paving machine, paired with an experienced operator and a trained crew, will make paving look easy – it’s not. Assuming fabric was not in the scope of work, than the paving team will have a man designated to either spray or spot apply tack coat material. Another ground personnel will be responsible for controlling the movement of trucks. It’s crucially important that the trucks stay in order and the next one up is always ready to go. The hotter the asphalt, the easier it is to work with, hence the longer a truck sits, the cooler the asphalt gets. The asphalt is dumped from the truck to the paver where two men control each side. One man is responsible to make sure the joint lines up with the previous paving pull and the other side is responsible for determining thickness, grade, pitch and fall. Accompanying the paver are usually two ground personnel known as “Lute men”. They take direction from the paving foreman and will spread / rake high and low spots out of areas that were just paved but need minor adjustments. Finally, there is the roller man. He is responsible for the compaction of the freshly laid asphalt. Usually this person will work the roller and also plate tampers and hand tampers in the tight areas where pavers cannot go.

If you have any questions or wish to schedule a pre-construction meeting, please contact PTG Enterprises aka My Pavement Guy today by calling 410-636-8777 or click here today!

I started my career in 1996 working on driveways. I learned how to work with homeowners and how to successfully manage driveway projects. Since then I have completed more than 2,000 driveway projects. Although the majority of my work today is parking lot or roadway oriented, I have never lost touch with my roots and have maintained and kept my Home Improvement License current, ( MHIC # 51204 ). I know driveways and understand driveway issues. I have crews that specialize in driveway installations and repairs. They are also committed to my ideals that “Attention to Detail” is the key to a successful driveway project.

Give me the opportunity to impress you. I can be your one stop ‘Pavement Guy,’ for any pavement project regardless of size or scope.

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Asphalt Parking Lot Replacement vs. Resurfacing (Overlay)

Wednesday, August 31st, 2011

Eventually, all asphalt parking lots become too deteriorated to maintain and require restoration or rehabilitation. The asphalt condition (as well as your budget) will usually determine the extent of the project. Some will require a total excavation and replacement, while others may only need to be resurfaced.

So how can you decided if your parking lot needs a surface overlay or a total replacement? This article from AsphaltAdvisor.com can help. It outlines the conditions of each procedure.

Total Excavation and Replacement

There eventually comes a time when every parking lot has outlived its useful life – it is more cost effective to excavate the entire lot and re-install a new one. The property manager or owner needs to evaluate the cost of maintaining the deteriorating pavement over time vs. the cost of replacement. Performing non-stop patching can be expensive.

Assuming the decision has been made to perform a total excavation and replacement, the process, in theory, is a simple one. The entire parking lot is machine excavated, usually by an asphalt milling machine, but this can vary with the size and shape of the lot. Once excavation is completed, the sub-grade stone is evaluated for its condition. Any soft spots will be undercut and new stone installed. Then the base and surface courses of asphalt are re-installed. With this option, the life cycle of the parking lot is reset to zero. The lot is brand new.

Surface Overlay
In some cases, if the sub-grade is good and there is no surface cracking, an overlay only is the proper fix. This is the correct option if the surface is dry, brittle, and raveling. In this situation, a new and additional layer of asphalt is installed over what is already there. It’s important to evaluate the project properly because the grade of the lot will change. Edge milling is required along gutter pans and transition points.

Resurfacing can be a viable option if removal and replacement does not fit your budget. But remember, if you are looking for a long-term solution, it is usually more cost effective to opt for the expensive total excavation and replacement. But in the end, the choice is yours.

If you would like a professional opinion or if you have any questions, contact PTG Enterprises aka My Pavement Guy by calling 410-636-8777 or click here today!

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Why Asphalt Pavement?

Thursday, June 30th, 2011

If you are thinking about having any surface re-paved – driveways, parking lots, roadways, airstrips – asphalt pavement is the way to go. Known for its durability and resilience, asphalt pavement is the best option for most all paved surfaces. If laid properly by a professional pavement company, asphalt pavement should last between 25 and 35 years. But what is asphalt pavement?

This article from PavemanPro.com explains.

Asphalt pavement is made up of a combination of stone (aggregate), sand, additives and liquid (petroleum) asphalt. This mixture is about 90% aggregate and sand and 10% asphalt. This combination forms a highly durable material that still maintains superior flexibility, allowing the surface to adapt to changing conditions produced by weather and the constantly changing surface beneath it. On top of its superior flexibility, asphalt pavement is also highly resistant to water, making it even more durable.

Steps involved in laying asphalt pavement:

1.    Preparation: Unless the asphalt is being laid over existing asphalt (overlay), it is the preparation of the ground beneath the pavement that is the most influential factor in the life of an asphalt pavement surface. Proper clearing, excavation, ground compaction and base materials require a great deal of expertise. Base materials can be compacted stone and/or an asphalt base with it’s own unique recipe. Regardless, without proper groundwork the life of the paved surface is greatly reduced.

2.    Spray a thin coat of liquid asphalt binder (hot tack) onto the surface using an asphalt distributor. This helps the newly paved surface create a greater bond between it and the surface beneath it.

3.    Lay the asphalt pavement using an asphalt paver and compacted using asphalt rollers.

4.    A minimum of 24 hours is required for the asphalt mix to solidify before it can be used. If enough time is not allowed for solidification, then it will result in poor a quality pavement.

5.    Asphalt maintenance – including cracksealing, pothole patching and sealcoating – can all be used to protect and extend the life of the already long life cycle of asphalt pavement.

If you have any questions or if you think asphalt pavement might be right for your next project, contact PTG Enterprises by calling 410-636-8777 or click here

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