Quick Answer
Weathering affects tarred bankline performance by causing the tar to degrade, leading to a loss of its binding properties and eventual failure of the bankline. This can occur due to exposure to heat, cold, moisture, and UV radiation. As a result, the bankline's strength and durability are compromised.
Factors Affecting Tar Degradation
Tar degradation is influenced by several factors, including temperature fluctuations, exposure to water, and UV radiation. For example, tar can become brittle and crack at temperatures below 32°F (0°C), while prolonged exposure to temperatures above 104°F (40°C) can cause it to soften and lose its adhesive properties. In addition, exposure to moisture can cause tar to become sticky and lose its binding properties.
Techniques for Extending Tarred Bankline Life
To extend the life of tarred bankline, it is essential to use proper storage and handling techniques. For instance, banklines should be stored in a cool, dry place, away from direct sunlight and heat sources. When handling tarred banklines, gloves should be worn to prevent skin oils from affecting the tar’s adhesive properties. Additionally, banklines should be inspected regularly for signs of tar degradation, such as cracking, flaking, or discoloration.
Best Practices for Tar Application
Proper application of tar is critical to ensuring the optimal performance of tarred banklines. This involves applying a uniform layer of tar to the bankline, ensuring that it is not too thick or thin. A general rule of thumb is to apply 2-3% tar content to the bankline. Overapplication of tar can lead to excessive weight and reduced flexibility, while underapplication can result in inadequate binding properties.
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