Asphalt milling, also called pavement milling, profiling, cold planing, or simply milling involves the removal of a layer or section of any paved surface — be it a parking lot, road, driveway, or even a bridge. The surface maybe removed or chipped off to ensure a level and/or smooth slope on the paved surface, or to extract the inlaid material for various reasons and uses. In as much as it is used to smoothen or straighten the surface, milling is also used to alter the heights and clearances of other pavement installations like curbs and gutters, road shoulders, overhead passes, guard rails, drainage and sewage structures etc. Recycling is another important reason for milling. The removed surface, usually asphalt and concrete with gravel and cement, is recycled and reused as an aggregate for repaving the same surface or for other road construction projects. The other reasons for profiling are mainly corrective or repair measures on faulty road surfaces.
Milling helps to reduce or prevent surface raveling and bleeding, where the aggregate and the binder start separating. It is also an effective solution to rutting, shoving, and any other gradient-related surface defects that causes the pavement to be uneven or unleveled. There are many specialized tools and equipment for milling and each is designed to produce specific results. Depending on the reason for milling, you can opt for any of the following alternatives.
Commonly known as pavement milling, this process is mostly used to shave off the height of a surface pavement. It’s very popular in Anderson sealing and road resurfacing or repaving projects, where it is used to get rid of decrepit pavement and to recreate the surface to the appropriate elevation. Planing is used to set accurate surface gradients and road profiles and it also help to expose any hidden curbs. The accumulated pavement is recycled. Planing requires expert and reliable construction teams and first-rate equipment to ensure quality and efficiency.
This is a more intricate and specialized milling process where special techniques and tools are used to rectify pavement defects before laying an asphalt sealant or overlay on the surface. It is part of the surface preparation process and it’s mainly used to remove the old pavement before reconstructing it afresh. The surface is cleaned and corrected accurately in terms of slope and height and the extracted pavement is carried away for reuse as Recyclable Asphalt Pavement (RAP).
This is another surface treatment technique, which is even more delicate and innovative than the other two discussed above. It also corrects road surface deficiencies and in this case achieves very accurate and very smooth pavement gradients. Micro Milling is recommended as a surface maintenance process for moderate and surface course roads because it helps to improve the quality and to ensure the longevity of pavements. It also enhances skid resistance despite producing a very smooth surface. All other defects like rutting, aggregate joints, and drainage problems are thoroughly solved and hence the pavement remains well preserved and protected for a long time.
Bridge Overlay Removal
When it comes to bridge restoration, you can use any suitable milling technique(s). Just make sure that the milling company is well equipped with cutting-edge equipment and a highly competent team capable of reviving or rehabilitating the deck properly. Experienced milling teams are able to remove the existing overlay plus the deck and also to revitalize the concrete surface easily, cost effectively, and satisfactorily.