How does proper drainage affect pavement longevity?

How does proper drainage affect pavement longevity?

• A. It prevents water buildup, reduces frost action, and minimizes erosion and joint degradation.
• B. It minimizes erosion and joint degradation only.
• C. It prevents water buildup and reduces frost action.
• D. It has no effect on pavement longevity.

Answer: (C)

Managing moisture through proper drainage directly affects pavement life by keeping water from pooling in and under the pavement and by lowering freeze-thaw stress. When water is removed effectively, you reduce the potential for frost action to crack, lift, or heave the pavement, which are major drivers of deterioration. That direct relationship—preventing water buildup and cutting down on frost-related damage—is why this option best captures how drainage influences longevity. Erosion and joint degradation can occur as secondary consequences of water issues, but the most immediate and direct benefits of drainage are preventing standing water and reducing frost action.

Managing moisture through proper drainage directly affects pavement life by keeping water from pooling in and under the pavement and by lowering freeze-thaw stress. When water is removed effectively, you reduce the potential for frost action to crack, lift, or heave the pavement, which are major drivers of deterioration. That direct relationship—preventing water buildup and cutting down on frost-related damage—is why this option best captures how drainage influences longevity. Erosion and joint degradation can occur as secondary consequences of water issues, but the most immediate and direct benefits of drainage are preventing standing water and reducing frost action.