No matter how well-designed/constructed, asphalt pavement deteriorates with time due to the combined impacts of traffic loads and the environment. Regular pavement maintenance limits the rate of degradation. However, when maintenance does not work, you will have to get asphalt rehabilitation done. Fixing areas of existing asphalt pavement to restart the deteriorating process is known as asphalt rehabilitation.
Action Construction Asphalt & Concrete will discuss different methods to increase the pavement’s service life in this post. Choosing the best procedure depends on the existing state of the asphalt pavement.
Methods of Asphalt rehabilitation:
Asphalt pavement overlay:
Asphalt overlaying is a rehabilitation process that involves laying 1.5 to 2.5 inches of fresh asphalt pavement over the old pavement. If the project includes curbs, the pavement will be edge-milled so that the new asphalt surface matches the old curb.
Overlay improves the surface and curb appeal of the pavement, but they are only for pavements that are still working well. Overlays are vulnerable to reflection cracking produced by existing holes in the pavement—repair areas with fatigue cracking or potholes before implementing an overlay.
Overlay and mill:
This rehabilitation technique employs a milling machine to remove two or more inches of the original pavement surface and replace it with fresh asphalt pavement. Like a standard overlay, a mill and overlay refresh the pavement’s surface while correcting drainage concerns.
Remove and replace:
This rehabilitation process accomplishes what the name implies: it eliminates the current asphalt down to the aggregate foundation and replaces it with a new pavement layer. The new pavement will not be prone to reflection cracking as we remove the old one entirely.
Pavements with a good quality, firm aggregate base layer and a badly broken or damaged asphalt surface are best for this procedure.
Full-depth reclamation employs a special machine to pulverize and combine the current asphalt pavement with the aggregate base and subgrade soils. Blending takes place on the top 6 to 12 inches of the pavement structure. In certain situations, a section of the new foundation material may need to be removed to install the new asphalt pavement surface on top.
Full-depth reclamation is a more environmentally friendly option since it recycles the pavement and lowers the necessary transportation quantity. Asphalt pavements with significant fatigue cracking and potholes are excellent candidates for full-depth restoration.
Stabilized full depth reclamation:
Stabilized full depth reclamation is comparable to regular full-depth reclamation, with the addition of cement or asphalt emulsion to stabilize and reinforce the new foundation materials. After the stabilized basic materials have been combined, they must be graded before solidifying. The final result is a significantly stronger asphalt pavement supporting the foundation layer. Stabilized reclamation is the best shot for pavements with weak subgrade soils or drainage concerns below the pavement.
Asphalt rehabilitation employs to restore, enhance, or save existing defective pavements so that they can continue to function.
Action Construction Asphalt & Concrete is a top asphalt paving firm in Dallas. We are experts in various asphalt paving services, including asphalt rehabilitation. Our expertise ensures that you receive the best asphalt paving services while keeping your project on budget and schedule. Request a free quote!