Asphalt driveways can become weak, pitted and cracked due to a variety of environmental factors and manmade. Once the asphalt has worn, causing further damage and deterioration is inevitable. Repair asphalt driveways or avoid such weakness when trying to pave, lower base of the research area, making the base rate to use and learn how to prepare and maintain an asphalt road.
An asphalt road is as robust as its lower base, supporting the ground beneath layers. Generally, clay is considered a weak ground to an asphalt road because it tends to deform under heavy loads. Poorly drained soil causes asphalt roads to be weak and leading to failure. Installing drain tile below the base asphalt to avoid softening the soil. Then you can install protective layer of tissue on the subbase to prevent mixing with the gravel base, soil prevent further structural weaknesses. Also, compact the soil before applying foundation gravel minimum of 6 inches. If you are unsure about your driveway and subsequent permeable soil quality, consult your local agricultural examine maps detailing the types of soil in your area.
Remove the existing road if necessary. The compacted soil should still be suitably qualified for drainage. A slope of 1/4 inch per foot is needed to prevent accumulation of water in the new entry. Two types of bases for an asphalt driveway recommended; 6-inch layer of gravel or asphalt base. The gravel allows sufficient permeability and is ideal for areas without clay-like soil. Asphalt base is a larger aggregate and asphalt does not have to be as thick as a gravel base. Asphalt is a premium basis for clay soils or if you anticipate heavy loads in the driveway.
There are many different types of mixtures asphalt paving materials. The type, size and quality of asphalt cement and aggregate account for the differences. For a very smooth and finished input, the mixture must have required smaller aggregates. The first layer will be slightly thick (2 inches) and have larger rocks. The final layer is thin (1 inch) and have smaller stones and gravel. Apply a layer of asphalt between the layers for bonding. If resurfacing, you need to remove dust, dirt and vegetation of the old surface. If you do not delete the existing entry, fill any low spots or cracks with patching material before applying the final layer of asphalt.
Resealing the entrance after a year with a commercial sealer is a high quality water bitumen emulsion. If the entry was pending, use a sealant that contains sand. Sealants are similar to the layers of paint and should apply not too often or thick. Otherwise, the entry is cracking and peeling. Asphalt driveways require sealing when they show obvious signs of wear or when the surface color lightens.