The Importance of Proper Drainage in Asphalt Paving
Asphalt Pavement and Drainage
The Basics of Asphalt Paving
Understanding the Importance of Drainage in Asphalt Paving
Drainage, or the method by which water is removed from your pavement, is the unsung hero of asphalt paving longevity and performance. It's easy to overlook its importance on a sunny day, but when the Alberta rain pours or the snow melts during a chinook, effective drainage can mean the difference between a resilient pavement and a ruined one.
Think of it this way: asphalt and water have a "love-hate relationship." While asphalt can handle a certain amount of water, standing water and improper drainage can spell trouble, especially with Alberta's freeze-thaw cycles.
Common Problems due to Improper Drainage
Poor drainage can lead to several issues, each with its unique set of headaches. Prolonged water exposure can weaken the bonds within the asphalt, leading to degradation and eventual potholes - a bane for vehicles and pedestrians alike. The pooling of water can also result in surface wear and tear, making your pavement look prematurely old and worn.
Below the surface, inadequate drainage can cause water to seep in and weaken the foundational layers of the asphalt paving, amplifying the damage caused by vehicular and foot traffic. The Alberta weather, with its freeze-thaw cycles, can also contribute to these issues as water within the pavement expands and contracts.
Benefits of Proper Drainage in Asphalt Paving
Methods to Achieve Proper Drainage
Creating effective drainage involves more than just surface work. The process begins with careful grading to ensure water flows away from the pavement and doesn't pool. A stable, high-quality aggregate base layer should be used to support the pavement and facilitate drainage.
Subsurface drainage also plays a crucial role. Methods such as installing a sand layer beneath the aggregate base or implementing a drainage system, like a drain tile, can help manage water below the pavement. Regular maintenance like sealcoating and crack filling can prevent water ingress, maintaining the pavement's integrity.
Expert Tips for Maintaining Good Drainage
Proper Drainage: It's A Must For Any Asphalt Paving Project