You have probably heard the term resurfacing or overlay if you are thinking about replacing or repairing your asphalt pavement. If this is a good option instead of total replacement which is also referred to as reconstruction so how do you know if this is a good option when it comes to pavement resurfacing?
Because of its durability, cost-effectiveness, the simplicity of construction, and strength Asphalt pavement is utilized in a variety of different applications. For the parking lots across the nation because of asphalt withstand heavier loads and when combined with proper asphalt maintenance which lasts for many years it is the material of choice.
It is important to develop a pavement management plan involving routine inspections and ongoing preventative maintenance in order to maximize the life of your asphalt parking lot or pavement. Here are some quick points for an overview of the topic to help you make an informed decision for resurfacing of the roads:
- It is one and the same thing as pavement resurfacing when it comes to an asphalt overlay.
- The process of installing a new layer of asphalt over the existing pavement surface is an asphalt overlay.
- It is usually one and a half inches to two inches thick with the new layer or the overlay
- When the base remains in stable condition the resurfacing asphalt pavement should be done.
- When the surface has become heavily oxidized resurfacing may be done.
- To evaluate the condition of the subgrade, the paving contractors will perform the core-testing.
- When there has been excessive damage or alligator cracks to the pavement surface, pavement overlays are not considered a good option.
- To reconstruct heavily damaged asphalt pavement than to install an overlay it is more cost efficient and effective.
- On an average, eight to fifteen years depending on several factors such as the weather patterns, freeze-thaw cycles, how much heavy vehicular traffic the pavement endures, the thickness of the asphalt and the condition of the subgrade at installation is how the pavement should last.
It is important to talk to your paving contractor with him about implementing the paving techniques for the pavement maintenance plan once you and your paving contractors make a decision on whether to repair or replace your asphalt pavement or not.
It can make a whole world of difference in the lifespan of your asphalt pavement parking lot and paying attention to the details like pothole repairs, seal coating, crack filling and even parking lot sweeping.
Asphalt repairs and patching
On the areas of pavement with potholes, patching is a common asphalt repair. When water seeps into the pavement through unsealed or improperly sealed cracks the potholes occur. It expands when the water freezes and enlarges the crack. A void is left when the ice under the pavement melts. Forming a pothole the surrounding pavement falls into this void.
Asphalt repair procedure
Depending on the season and/or site location this process consists of filling the areas with hot or cold asphalt mix.
Asphalt removal and replacement
The appearance diminishes over time as asphalt pavement progresses through its performance life cycle. Within the asphalt, fine hairline cracks spread and deepen within the asphalt.
Water may enter through the cracks and holes may form undermining the substrate without the ongoing maintenance. The most effective form of repairs is to remove and replace the deteriorated area in this case.
Asphalt overlay process
To ensure that the repair is performed properly, the asphalt overlay process consists of several important steps.
a) The Cost
The amount of grading and substrate work is required and other site-specific factors the cost for asphalt removal and replacement depends on the geographic location.
b) Asphalt Resurfacing
A long-term and cost-effective solution is to resurface the asphalt pavement also referred to as overlay is what asphalt resurfacing in more severe cases of asphalt failure is. It is a good idea to have your pavement resurfaced if you notice grade depressions and or large sections of alligator areas.
The process of asphalt resurfacing
Including the preparing and cleaning the area prior to performing work, leveling asphalt of low areas, grinding of all transitions adjusting of all drainage structure and many other steps which are unique to each site is what this process consists of.
a) The resurfacing options
Geotextile Reinforced Resurfacing – Petromat is an option that may be included with asphalt resurfacing is an option. The non-woven, petroleum-based geotextile fabric which is used to retard reflective cracking between the existing pavement and the newly installed asphalt surface is Petromat. Also adding the structural support and strength this fabric acts as a waterproofing membrane.
Leveling Binder – Hot asphalt is installed at various depths to adjust pitch to proper grades while increasing parking lot strengths in the lower areas.
Butt Joint/Grinding – Asphalt is removed along the perimeter to allow the proper depth of asphalt on the edge n areas which require the resurface to tie into the other existing surfaces like concrete.
Transition Milling – Asphalt with being milled and replaced to allow a proper depth and transitions in areas which require the resurface to tie into other existing surfaces.
b) Infrared Asphalt Repair
For the critical repairs, the infrared asphalt technology is an effective solution. With the original this unique method blends with the hot-mix asphalt and then it compacts to the area creating a seamless restoration.
Pavement heaving or uneven surfaces surrounding catch basins or rough surfaces in drive lanes or parking stalls is a good idea to consider an infrared repair.
Without causing burning, scaling, or separation of the asphalt from the aggregate the infrared rays allow deep penetration asphalt repair and reclaiming.
Cost savings, as the project is completed with fewer raw materials, time savings as this repair option takes less time than the traditional asphalt resurfacing, seamless repairs as the patch bonds to existing surface and produces no joints for water to penetrate and fewer traffic interruptions as the patch can be driven on almost immediately are some of the additional benefits for this asphalt repair.