How to Identify Defects in Tarred Bankline When Purchasing?

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Inspection Techniques When purchasing tarred bankline, inspect the surface for signs of wear or uneven tar application. Check for cracks, which can indicate a weak point that may compromise the bankline’s strength. Use a flashlight to examine the surface for any unevenness or inconsistencies in the tar coating. Apply a small drop of water to the surface to check for moisture content; if the water is absorbed quickly, it may indicate a high moisture content, which can affect the bankline’s strength and durability.
Moisture Content Testing Apply a small drop of water to the surface of the bankline. Observe the drop for 10 seconds to see how quickly it is absorbed. If the drop is absorbed in less than 10 seconds, it may indicate a high moisture content. If the drop remains visible after 30 seconds, it may indicate a low moisture content. Check for moisture content at multiple points on the bankline to ensure consistency.
Tar Coating Thickness Check the tar coating thickness by scraping a small area of the bankline with a blunt object, such as a credit card or a knife. The tar coating should be at least 0.5 mm thick to provide adequate protection. If the tar coating is thinner, it may compromise the bankline’s strength and durability.