Roads are an integral part of our infrastructure as they transport millions of cars every year to and from work, the shops, holidays and home. Yet not many know how a road is actually built. Therefore we endeavor to explain each process of building a road with roadwork machinery in Brisbane!
A dozer will clear trees and underbrush from the land so there is nothing but soil while large excavators work to remove the debris and hard to move organic matter such as stumps and fallen trees.
Removing the existing road
In some cases, an existing road will need to be removed and a new one laid in its place. This work is usually performed by roadwork machinery in Brisbane that includes dozers, excavators and bobcats that demolish the existing road with ease.
The broken pieces of asphalt are taken away using a tipper truck and are recycled into reusable asphalt for future road projects. This makes building roads more sustainable in the long run.
Grading the road
Once the land is cleared or the existing road demolished, it is time for the road to be leveled. This is done by roadwork machinery in Brisbane such as a grader, which comes with an advanced GPS system. The GPS system allows this powerful roadwork machinery to accurately level the site so the project can start.
The road needs to be leveled in a way that allows it to slope slightly so that water can run off easily. This is important in building any road as water is able to easily damage asphalt and cause cracks and potholes.
Installing the sub base
After the road is appropriately leveled and compacted it is time to add the sub base. This is a layer of aggregate material that sits under the binding and asphalt layers of the road. It is important that it is installed correctly so that the road stays intact and lasts.
To install the sub base the aggregate material is poured onto the appropriate area and compacted multiple times until it is stable. Once this is done then checks are made to ensure that the sub base is perfect.
Correcting the sub base
During the checks of the sub base there may be soft spots in the material, which can impact the road if not sorted out during this stage. Therefore, repairs needs to made to the road before another layer can be placed on top of the sub base.
Correcting the sub base involves identifying soft spots in the aggregate material then digging in that spot until the clay or soil causing the weakness in the road is reached. This is then removed and replaced with aggregate material to help make it stronger. Once each soft spot is repaired the road is compacted and the process repeated until the road is completely sturdy.
Installing the binding layer and asphalt
Once the sub base is done then it is time to add the binding and asphalt layers. The binding layer combines oil and large pieces of aggregate material to create a layer that is rough and is able to bind to the sub base and asphalt layers easily.
On top of the binding layer comes the final asphalt layer. This is a mix of oil, small aggregate material and sand, which makes the road smooth once compacted. Any part of the road that connects to other roads or driveways is also smoothed out so the road transitions into another seamlessly. Once this is done the road receives a final compaction test to ensure it is ready to drive on then it is finished!
If you require roadwork machinery in Brisbane for your upcoming project contact us today on (07) 3206 2800.