Asphalt paving is an attractive alternative to gravel or concrete. The asphalt is quite durable and easy to repair. Cracks that develop over time are filled with more asphalt and sealant can be applied every few years to help protect the color of asphalt and fill small cracks.
Manufacture of asphalt
Asphalt is made from a mixture of hot asphalt cement, sand and aggregate (rocks of different sizes). Asphalt cement is an oil-based product. The mixture is heated to 149 degrees Celsius and is spread when hot, so it is best that a company make its asphalt paving asphalt to maintain refrigeration during transport. Asphalt cools quickly once spread so on pavement may be conducted shortly after completion.
Preparing a surface
A foundation is dug about 6 to 10 inches deep. The thicker the base heavier vehicles can drive over it. The floor is made as compact as possible and authorized waste. The base is made level. Added crushed gravel and larger are used to fill the base. Coarse aggregate is used if the base is in an area of soil or clay compound as having poor drainage. Gravel is gradual or evenly distributed.
Asphalt is delivered to the site and transported to a vehicle maintaining the mixture so that no separate components or freeze. Pour over hot asphalt and gravel aggregates. A spreader is used to spread asphalt hot mix. A paver is then used to mix in a layer of gravel and smooth pavement. Compressors are used to compact the pavement and thicken.
Asphalt is durable and long lasting, but some maintenance is needed to keep looking its best. A sealant can be applied when the paving is done. Asphalt sealer keeps looking shiny and full of small cracks appearing over time. Sealer should be reapplied every few years. You can also repair larger cracks. The cracks are patched and filled with hot asphalt cement, which makes the nearly invisible patch.