6 Reasons Why Car park Pavements Fail

Car park pavements experiences different usage patterns when compared to roads but this can cause many carparks to become overlooked by their owners. Carpark pavement, like any other pavement asset, will deteriorate with time and age and proper maintenance is required to maximise the pavement’s lifepan. The following is an example of many of the unique factors that must be considered when looking after a car park.

1. Harsh Weather Conditions

Freezing temperatures can have a significant impact on the condition of an asphalt parking lot. When water from rain and snow freezes, it can cause micro cracks in the surface to expand. This process can repeat itself every time the water freezes and thaws, causing the cracks to become larger and eventually leading to the surface of the parking lot crumbling. To mitigate this, it's important to take preventative measures such as regularly cleaning the parking lot and ensuring proper drainage to prevent water from pooling on the surface.

2. Dirt, Debris and Oil Spills

Any type of dirt or debris, including oil and other non-water substances, can trap moisture on the surface of an asphalt parking lot. When the moisture is not able to evaporate or drain properly, it can seep into the asphalt and cause damage. This is particularly true in colder climates, where the temperature fluctuations can cause the moisture to freeze and expand, leading to cracks and fissures in the surface.

3. Poor Drainage System

A faulty or clogged drainage system will prove detrimental to the lifespan of the pavement. Standing water can not only lead to freezing and cracking, but it can also cause damage from trapped debris, oil, and acids. It's important to address both the drainage issue and the resulting damage to ensure the longevity and safety of the parking lot.

4. Low-Quality Sealants

A properly sealed parking lot can help extend its lifespan and prevent damage from the elements. If the original asphalt contractors failed to properly seal the parking lot, it will likely start to deteriorate faster. The lack of a protective sealant will allow moisture and other elements to penetrate the surface, leading to cracks and exposure of the underlying gravel layer. This can cause the gravel to become scattered and uneven, which will lead to an uneven surface and a need for a complete reconstruction. Proper sealing is an important part of preventative maintenance for asphalt parking lots.

5. Heavy Vehicle Traffic

Heavy machinery and equipment can put a significant weight load on the asphalt and gravel layers of a parking lot. Depending on the soil conditions, this can cause compaction of the gravel layers, leading to cracking and gaps in the top layer of asphalt. While the top layer of asphalt may appear to be undamaged, the compacted gravel layers beneath the surface can cause long-term damage and deformation to the entire parking lot. It's important for property owners to monitor the condition of the parking lot regularly and take preventative measures, such as limiting the weight of vehicles and equipment, to help prevent this type of damage.

6. Lack of Maintenance

When a parking lot is not maintained properly, debris can build up on the surface, clogging the drainage system and causing water to pond. Moreover, neglecting regular maintenance tasks such as filling in potholes and cracks can lead to larger, more costly repairs down the road.

Infographic: 6 Reasons Why Car Park Pavements Fail