Patching potholes with asphalt may seem like a simple task, but it’s important to have damaged sections of asphalt patched correctly to ensure a professional finish that lasts many years. Our experienced team of local asphalting experts understands the importance of removing damaged asphalt, tacking the edges and repairing the base where required before patching the damaged area and finishing it professionally.
This ensures the asphalt is properly compacted and finished, and won’t give under tremendous pressure as it’s driven over by cars and heavy commercial vehicles.
When pavements become cracked, it’s easy for moisture to breach the surface. As a result, the pavement material can fail. If cracks aren’t sealed properly, then they can lead to even more cracking – or worse – potholes. The longer cracks are left, the worse the problems can be. Eventually, there will be a serious pavement breakdown. When this happens, it can be highly expensive to repair the damage.
To prevent the water from infiltrating the pavement, crack sealing is required. Typically, this is done with a hot polymer/rubberised bitumen. By doing this, pavement problems are prevented from occurring in the future.
Crack sealing is an incredibly cheap and effective way of maintaining pavements. It’s a far more economical method when compared to other works such as reconstructing and resurfacing. Not only this, but it’s also a very practical measure to take. All roads require a good pavement program, and crack sealing needs to be a part of it.
Who Uses Crack Sealing?
The use of crack sealing spans across the globe, almost every country uses it. It’s a particularly popular method in western countries like France, England, and Germany. In the USA, some states will spend millions of dollars on their crack sealing programs.
Since the 1990’s, crack sealing has been more frequently used in Australia. All over the country, there are local governments calling for crack sealing to be a major part of their maintenance program. It’s also starting to be used by contractors – big and small. They’ve found that it gives better results, and leads to their repairs lasting a lot longer.
Looking at the results in Australia, and globally, it’s clear how effective crack sealing is. There’s no doubt that it can extend pavement life while protecting it from further damage.
Main Causes Of Failure In Asphalt And Concrete
There are many things that can cause asphalt and concrete failures. They vary in severity, and some are more common than others. You’ll find some of the main causes of failure in asphalt and concrete listed below:
- Poor drainage system
- Pavement depth
- Water penetration
- Oxidation of the binder
- Continued traffic use
- Overloading of heavy vehicles
Maintenance Programs Can Save You Tons Of Money
It’s been figured out that a proper maintenance program can save you millions of dollars. The average council will have around $300m worth of assets in roads. If you want to elongate the life of your pavements, you need a high-quality maintenance program. It’s important that you start the maintenance process as early as possible.
The moment you see pavement failing occur is when you should intervene. It will deteriorate quickly as soon as the tiniest crack is present. The crack sealing process is an essential part of early intervention. Leaving things for too long can be catastrophic to the pavements, and your budget. By using crack sealing, you can slow down the length of time it takes for a pavement to deteriorate and break up. As a result, you extend its life dramatically. This will then lead to you saving millions in future years.
Common Crack Sealing Applications
This is most commonly used on chip seal surfaces. It’s been discovered that this application ensures there’s an improved penetration into cracks.
Scraper finish is often used on smooth asphalt. It can aid in the reduction of noise and help lead to better skid resistance.
Wide cracking will often be subjected to overbanding. This process helps to provide a solid bondage on both sides of the crack.
It’s crucial that crack sealing is done using a suitable plant with great heating capabilities. You’ll need the right qualifications when dealing with this as the sealant is technically dangerous goods.
There are a few things to look out for when selecting quality crack sealing products. These things include how flexible they are, and how they can deal with different weather conditions. Another major thing to look out for is whether they are resistant to skids.
The best crack sealants will have brilliant torsional recovery within the crack. What this means is that it can withstand frequent expansion and contractions in the pavement. It’s crucial that this sealant remains flexible at various temperatures. Furthermore, it needs to have a high softening point too. This will guarantee that it doesn’t bleed in extremely hot conditions.
All asphalt repairs need to be completed using the proper techniques to be sure of longevity. Crack sealing can be used alongside patches to form a waterproof bond and increase repair life.
Crack sealing needs to be done before any overlaying work on asphalt. New asphalt that’s laid on damaged pavement will only result in more cracks forming.