Paving is extremely durable and can easily withstand thousands of kilograms of weight. However, it does come with its own set of vulnerabilities. Temperature is one of them. Many areas in South Africa experience extreme temperature variations throughout the year which can have a negative effect on roads, parking lots, patios and driveways.
According to paving specialists, this is what happens to your paving with each temperature element.
While we don’t have much snow in winter in South Africa, temperatures can fluctuate above and below freezing. In areas where it rains in winter, water seeps into the cracks. Once the temperature drops, the water freezes and expands, making the crack bigger than it was before. This process will not only widen cracks that already exist but cause extensive and dangerous damage such as potholes.
In certain parts of South Africa, we can expect temperatures well over 40 degrees Celsius in summer. This causes the pavement to expand. If it expands too much, it will crack. The crack will only become bigger over time which will cause even bigger problems.
Additionally, cracks allow water to accumulate and over time erode subsurface layers. The result of this is air gaps and the moment weight from a vehicle is applied to the top layer, the pavement will form a hole.
Rain and Hail
Rain is problematic for your pavement in winter but if the area is on a steep slope, it can be even worse. In the event of asphalt paving, rain will wash down the liquid asphalt and after time disintegrate the top layer of the material. This will cause the paved area to become aggregate and rock over time.
For more information about paving or for a free quote, get in touch with the paving specialists at Techopaving today.