Paving a parking lot adds aesthetic value to any property. With PLM the paving and compaction process will be done with the most modern equipment available. Lasers will be used as needed to check the drainage and ensure that water will run properly. The asphalt will be placed to a predetermined depth, then rolled and compacted with a series of rollers and hand compactors to achieve proper compaction and density. There are several different categories of paving:
New Construction: New construction consists of excavation of an area, then adding, grading, and compacting a stone base. After the stone base is ready asphalt mix is installed at the proper thickness designed for your needs. The thickness of stone and asphalt are calculated based upon traffic flow, vehicle weight, and existing soil conditions. With PLM we always pave to the compacted thickness as stated on our contract to make sure your parking lot lasts.
Remove & Replace: Deterioration of asphalt can happen from a single problem or combination of problems. Poor stone base, poor sub-base (the soils below the stone base), inadequate asphalt thickness, poor maintenance, heavy traffic and Mother Nature can all play a significant role in the failure of your parking lot surface. Once your asphalt has oxidized and deteriorated to a point where an overlay is no longer an option, we will remove and re-pave your lot in accordance with industry standards. Remember your parking lot surface is only as strong as the base beneath it. When we remove and existing parking lot we perform a proof roll to check the base; this involves driving a loaded dump truck on the stone to look for any movement or deflection that would indicate a base problem. We then undercut as necessary prior to paving to assure a longer lasting pavement surface.
Milling and Resurfacing: Often an asphalt surface is deteriorated but still maintains the structural integrity needed to perform an overlay. This process involves adding a new layer of asphalt, which is applied directly over the old layer of asphalt. A mill can be used in two different methods to help resurfacing. The first method is to mill of a uniform thickness of existing asphalt from the entire parking lot to make room for the new pavement. The second method involves only milling the existing asphalt at transitions, and critical drainage points. No matter which method of milling is used, it is followed by cleaning the entire asphalt surface, then applying tack coat (glue) to help adhesion of the new and old pavements. The new asphalt layer is then installed and compacted.
Pulverizing: When asphalt has deteriorated to the point where it no longer qualifies for an overlay we often have two options. The first, as stated above, is removal and replacement. The second option is pulverizing and repaving. There are some limitation to this technique, however if you have a solid base and your match points (buildings, walkways, curbing, concrete pads, roadways etc.) allow for the elevation of your lot to be increased, pulverizing can be an economical and green alterative. A large full depth reclamation machine is used to grind up your asphalt along with a percentage of your base. The area is then watered, graded, rolled and re-paved to a pre-determined thickness to meet your traffic needs. This method uses your existing pavement to increase the thickness of your base, thus giving longer life to your new pavement. The economical value of pulverizing comes from the elimination of excavation and trucking cost. We no longer need to haul the existing pavement off of the site, which in turn will reflect a savings to you as our valued customer.