How often should I re-apply RHiNOPHALT® Asphalt Preservative?

RHiNOPHALT® Asphalt Preservation treatment is best applied when the asphalt is still in good condition, typically within the first five to eight years after the asphalt is laid. This timing ensures the preservation treatment can effectively penetrate and protect the asphalt from oxidation, UV degradation, and water ingress before significant wear and tear occur.

Timely application extends the pavement’s lifespan by slowing the ageing process, reducing the need for more extensive repairs or resurfacing in the future. It is crucial to monitor the asphalt’s condition and apply RHiNOPHALT® before visible signs of distress, such as cracking or ravelling become prevalent.

The repeat interval for re-applying RHiNOPHALT® Asphalt Preservation generally depends on several factors, including the condition of the pavement, climate, traffic load, and the specific goals of the preservation program. However, typical re-application intervals range between 5 to 7 years. Here’s a more detailed breakdown:

1. General Guidelines for Re-application:

• 5 Years: In many cases, RHiNOPHALT® is applied every 5 years, particularly for heavily trafficked roads or pavements in regions with extreme climate conditions (e.g., freeze-thaw cycles, intense heat).
• 5 to 7 Years: In more moderate climates or for lower-traffic areas, re-application may be done every 5 to 7 years. These roads may experience slower wear, extending the time between treatments.

2. Factors Influencing the Re-application Interval:

• Traffic Volume and Load: Heavier traffic and higher loads stress the asphalt more quickly, requiring more frequent preservation treatments.
• Climate and Weather Conditions: Extreme temperature fluctuations, high UV exposure, and moisture (rain, snow, freeze-thaw cycles) accelerate pavement degradation and may necessitate more frequent re-application.
• Pavement Condition: The current state of the asphalt plays a role. Upon review inspection, if the asphalt surface is in relatively good condition, it may only need preservation every 5–7 years. If it’s already showing early signs of cracking or wear, applying it sooner might be advisable.
• Performance of the Previous Treatment: Monitoring the condition of the pavement after each treatment will help determine if the preservation is still effective. If the pavement is still holding up well, the interval can be extended, while significant deterioration may call for an earlier re-application.
• Customer Support: ASI Solutions can undertake joint site inspections with the client to determine the pavement condition at any time during the life of the RHiNOPHALT® treatment.

3. Monitoring and Assessment:

To optimize the re-application timing, regular assessments of the pavement’s condition should be conducted. This includes looking at factors like surface cracking, ravelling, oxidation, and moisture infiltration. Many asset management systems employ a Pavement Condition Index (PCI) or similar metrics to help determine the optimal time for the next treatment.

Conclusion:

The ideal repeat interval for RHiNOPHALT® Asphalt Preservation is typically 5 to 7 years, depending on traffic, climate, and the overall condition of the pavement. Regular monitoring helps ensure that treatments are applied at the right time to maximize the life of the pavement and protect the investment.