Asphalt is a popular choice for many paving projects due to its durability and cost-effectiveness. However, despite its robustness, asphalt is vulnerable to certain environmental elements, particularly water. Water can cause significant damage to asphalt surfaces over time, leading to a need for costly repairs and maintenance. Fortunately, sealcoating provides an effective solution to protect asphalt from water damage. Andersen Asphalt & Striping would like to explore the damaging effects of water on asphalt and how sealcoating helps in preserving the integrity and longevity of these surfaces.
Water Damage to Asphalt
Asphalt consists of a mixture of aggregate stones and sand bound together by bitumen, a petroleum-based binder. The porous nature of asphalt makes it susceptible to water penetration. Here’s how water affects asphalt:
• Moisture Penetration: Water can seep into the porous asphalt surface and settle in the sub-layers. Over time, this moisture can weaken the bond between the aggregates and the binder, leading to structural breakdowns such as cracks and potholes.
• Freeze-Thaw Cycles: In colder climates, the freeze-thaw cycle exacerbates the damage. Water trapped in the asphalt expands when it freezes, creating cracks and fissures. Upon thawing, these cracks can deepen and widen, eventually leading to significant surface deterioration.
• Undermining Sub-base: Water infiltration can also undermine the sub-base of asphalt pavements. A weak sub-base reduces the load-bearing capacity of the asphalt, leading to issues like rutting, depressions, and complete surface collapse in severe cases.
• Chemical Reactions: Water can also facilitate harmful chemical reactions in asphalt. For example, water can react with oils and other fluids leaked from vehicles, increasing the rate of asphalt degradation.
Sealcoating; A Shield Against Water Damage
Sealcoating is not just about improving the aesthetic appeal of asphalt, it is an important protective measure. Here’s how it helps in combating water damage:
• Waterproofing Barrier: Sealcoating acts as a waterproof barrier that prevents water from penetrating the asphalt’s surface. This barrier keeps the base and subbase layers dry, thereby maintaining structural integrity and preventing moisture-related damages.
• Preventing Oxidation: By sealing off the asphalt from air and water, sealcoating reduces the rate of oxidation of the asphalt binder. Oxidation can cause the asphalt to become brittle and more susceptible to cracking. A less oxidized surface maintains its flexibility and resilience against traffic and environmental stresses.
• Enhancing Surface Durability: Sealcoating fills and seals the smaller cracks that can become water entry points. It also provides a smooth, even surface that improves the runoff of water, reducing the chance of water pooling and seeping into the asphalt.
• Long-Term Cost Savings: By extending the life of the asphalt surface and reducing the need for frequent repairs, sealcoating offers significant long-term cost savings. It is a cost-effective maintenance strategy that protects the asphalt from the most common forms of damage, including those caused by water.
Asphalt Parking Lot & Road Pavement Resurfacing, Replacement & More in Reno, Elko, Henderson, North LV, Paradise, Spring Valley, Sunrise Manor, Las Vegas, NV | State of Nevada
Water is one of the greatest adversaries of asphalt, capable of undermining its structural integrity and shortening its lifespan. However, with regular and proper application of sealcoating, property owners can protect their asphalt investments from the relentless effects of water. Sealcoating not only preserves the quality and functionality of asphalt but also enhances its appearance, making it a wise choice for anyone looking to maintain robust and resilient pavement surfaces. For sealcoating and other asphalt services, contact Andersen Asphalt & Striping today.
