It is not recommended to use auger extensions when the screed is extended since auger extensions are a notable source of segregation.

• A. True
• B. False
• C. Not always
• D. Not relevant

Answer: (B)

When the screed is extended, keeping the mix flowing evenly along the entire length is more challenging. Auger extensions are used to feed material smoothly into the extended portion, helping to maintain a uniform distribution and reduce the chance that fines pile up or coarse material drops out ahead of the rest. They are not inherently a major source of segregation; in many situations they help prevent it by ensuring consistent flow and mixing along the extended screed. The primary causes of segregation tend to be issues like improper feed rates, large drop heights, temperature differences, and poor aggregate gradation, rather than the auger extensions themselves. So the statement is not correct; auger extensions are commonly used with extended screeds to promote uniformity rather than being avoided because of segregation concerns.