When your property's asphalt-covered road becomes aged from sun and weather and is in need to repairs and resurfacing, it is a good idea to handle this maintenance before the road becomes too badly damaged. To prevent having to tear out an old and too-badly damaged asphalt road, you can apply a new layer of bituminous surface treatment over the existing asphalt. This process will provide a flexible, waterproof surface that can help reduce any freeze-thaw damage to your road, with added skid resistance and traction for vehicles. A new bituminous surface treatment of asphalt and aggregate will also help protect your road from sun and weather damage. Here are instructions to help you repair and resurface your road.
Repair Existing Asphalt Damage
Before you can resurface your road, you will need to repair any holes and sections of crumbling asphalt. Smaller cracks in the old asphalt surface will be filled and repaired when you pour over the new layer of asphalt emulsion. Make sure to repair any large sections of damage that will affect the integrity of your new bituminous layer.
Clear out potholes and crumbled areas of asphalt with a shovel to remove all loose debris and rocks. Scoop cold-mix bagged asphalt repair into each of the holes. Tamp down the materials as you fill each hole, using a hand tamp or an asphalt roller to eliminate any pockets of air in your repair. You can find cold-mix bagged asphalt repair and a hand tamp at most home improvement stores. Or, you can rent an asphalt roller at most equipment rental shops.
Pour New Asphalt Emulsion Layer
Now that all the road damage has been repaired, you can pour a layer of asphalt emulsion over the surface of your road. If you have access to an emulsion sprayer, this will make the process simpler, or you can hire an road construction company like Lien Transportation Co to help you apply a uniform layer over your road's surface.
It is important that you spread the new asphalt emulsion and are ready to apply the gravel before the emulsion turns from a brown color into a black color. If the emulsion has turned black, the water has evaporated from it, and it won't allow gravel to become embedded in its surface.
Coat with Aggregate Crushed Gravel
When you spread the layer of crushed gravel onto the asphalt, make sure the crushed gravel is of similar-sized pieces with jagged edges, and not round in shape as some gravel can be. Jagged stone edges will "grip" one another when they are pressed together, versus rounded gravel that can't grip as well. Rounded gravel can also create a smooth and slippery driving surface for vehicles and won't provide the best traction for your road.
Spread a layer of gravel over the emulsion so approximately 50 percent of the gravel becomes embedded into the asphalt emulsion binder. Compact the gravel with an asphalt roller onto the asphalt emulsion to press the gravel's jagged edges together, which will help increase the strength of your newly paved surface.
It is also important that the crushed gravel is not full of dust, which can prevent the gravel from adhering into the asphalt emulsion properly. Then, when vehicles drive over the newly paved surface, the gravel will come loose from the binding emulsion, and the pavement's strength will be decreased. Over time, all the loose gravel will require you to make repairs and re-coat the surface of your roadway in a new layer of asphalt and gravel. Otherwise, a road coated in bituminous surface treatment will need maintenance every two to five years.
Last, sweep the road to clear off any loose gravel that has not combined with the underlying layer of emulsion.