BACK TO BASICS: MILLING FOR QUALITY machine to adjust to the longitudinal and transverse profile of the road. A slower speed allows for many more cuts on the existing surface to provide a more uniform texture. A slower speed provides a uniform milling material for use at the asphalt plant. Finally, make sure the milling crew knows the specifics of the project. A project calling for deep milling and multiple lift paving will differ greatly from a thin AC wearing course. While the machine may be the same, the crew’s approach to the project should be very different. Understanding and communicating the project’s requirements allows the crew to approach the task appropriately. This article was based on a video provided by Mr. Tom Chastain, Milling Product Manager for Wirtgen America. The entire video can be viewed on VAA’s YouTube channel. Figure 3 STANDARD MILLING DRUM FB 2000_LA 15 Advanced Speed: 40 m/min (theory) Drum Rotation = Const. STANDARD MILLING DRUM FB 2000_LA 15 Advanced Speed: 20 m/min (theory) VAASPHALT.ORG 23
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