Asphalt is a widely used material, familiar to everyone for constructing and repairing roads, pavements, car parks, and other surfaces. In this article, we will explore how long asphalt lasts, what factors affect its lifespan, and what can shorten it. The quality and durability of asphalt impact not only the comfort of use but also the safety of those who rely on it.
Asphalt Lifespan
There is no definitive answer to how long asphalt lasts, as its lifespan depends on numerous factors.
On average, asphalt surfaces can last between 5 and 15 years.
Of course, these figures are approximate, and in practice, asphalt can last either shorter or longer than the stated period. Many factors influence its lifespan, some related to construction methods and others linked to climate, weather, and natural processes of wear and tear. Ordering high-quality asphalt installation is only the first step; you must also maintain it to preserve its integrity.
Factors Affecting Durability
- Quality of materials and installation techniques: This is one of the most important factors. If poor-quality materials are used or the installation process is not followed correctly, the asphalt’s lifespan will be significantly reduced.
- Traffic load: The higher the traffic load, the faster the asphalt surface wears down.
- Maintenance level: Regular repair of potholes, cracks, and other defects can extend the lifespan of the asphalt.
- Climate conditions: In regions with extreme temperature fluctuations and heavy rainfall, asphalt tends to have a shorter lifespan compared to areas with more moderate climates. Let’s take a closer look at how climate factors affect asphalt.
The Impact of Climate Factors
Temperature fluctuations
- Frost heaving: When water within the pores of the asphalt freezes, it expands, leading to the formation of microcracks and gradual surface deterioration.
- Asphalt softening: In hot weather, the bitumen, which binds the asphalt, softens, making the surface more prone to rutting and deformation under traffic.
Precipitation
- Rain: Water infiltrating microcracks and pores in the asphalt causes them to widen, leading to more significant defects.
- Snow: During spring thaws, water saturates the underlying layers, causing the foundation to settle and resulting in potholes.
Wind
- Wind erosion: Strong winds, especially in arid regions, can blow away fine particles from the asphalt, making it more brittle.
- Snow drift displacement: In winter, accumulated snow on the road edges can be moved by passing vehicles, damaging the edges of the asphalt surface.
Solar radiation
- Ultraviolet radiation: UV rays from the sun degrade the bitumen, making the asphalt less durable and more prone to cracking.
Geological Factors
- Ground movement: Shifting of the ground beneath the asphalt can lead to the formation of waves, potholes, and other surface deformations.
- Underground water: The rise of groundwater to the surface often results in erosion of the foundation and the formation of sinkholes in the asphalt.
It’s important to note that the effects of natural factors on asphalt are exacerbated by poor road maintenance.
Factors Affecting Durability
There are various measures that can help asphalt last longer:
- Follow proper installation techniques: Work should be carried out by qualified professionals using certified equipment. This applies to both road construction and repair works.
- Monitor traffic load: Limit the movement of vehicles that exceed the allowed weight limit.
- Clear roads of debris and snow: Regular cleaning prevents damage caused by accumulated materials and moisture.
- Minimise the use of studded tyres: In an ideal world, this would be followed, but in reality, especially during winter, the use of studded tyres is often a necessity.
- Provide timely maintenance: Regularly clean the road of debris and snow, and promptly repair potholes, cracks, and other defects.
- Use protective sealants: Treating asphalt with specialised sealants increases its water resistance and ability to withstand weather conditions.
- Asphalt repair: Preventive and timely road repairs are crucial for extending the surface’s lifespan.
By adhering to these simple rules, you can significantly extend the lifespan of your asphalt surfaces and save on repair costs. When you work with UKPotholes, you can always be confident in the longevity and reliability of your road surfaces.
