What is the significance of properly setting the angle of attack before paving?

The significance of properly setting the angle of attack before paving is primarily related to its impact on compaction and smoothness. The angle of attack refers to the angle at which the material is delivered to the paver screed. When this angle is appropriately adjusted, it facilitates a more uniform and efficient flow of the asphalt mix into the screed. This leads to better initial compaction as the material is laid down, which is crucial for achieving the desired density and load-bearing capacity of the pavement.

Additionally, a correct angle of attack helps in achieving a smoother surface finish since it allows for more controlled material handling. If the angle is too steep or too shallow, it can lead to problems such as segregation of the asphalt mix or inadequate compaction, which detracts from the overall quality of the pavement. Therefore, ensuring the right angle of attack is essential for both the structural integrity and the aesthetic quality of the finished pavement surface.