![Page 1: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/1.jpg)
Module 3-4
Cold Milling Cold Milling
![Page 2: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/2.jpg)
Learning Objectives Describe the cold milling process
Describe the characteristics of typical milling equipment
Describe typical applications of cold milling and where it is best applied
Describe design and construction issues
![Page 3: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/3.jpg)
Introduction Revolutionized HMA removal,
leveling and overlay preparation
Considerable changes over the last 20 years
![Page 4: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/4.jpg)
Definitions Cold milling - removal of pavement
surface using drum-mounted carbide steel cutting bits
Diamond grinding Restore ride Improve friction Not to remove material
Grooving – resist hydroplaning
![Page 5: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/5.jpg)
Cold Milling Equipment
![Page 6: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/6.jpg)
Purpose and Application Primary use on HMA
Overlay Recycling Reconstruction
Emerging use on PCC
Full lane to partial lane width
Partial depth to full depth removal
![Page 7: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/7.jpg)
How does your State use cold milling? Removal of rutting
Restoration of curb line
Restoration of cross slope
Restoration of surface friction
Mass removal of HMA
Roughened surface for improved bond between layers
![Page 8: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/8.jpg)
Limitations and Effectiveness Surface texture produced by milling
is a function of: Carbide bit spacing and condition Depth of cut Rotational speed of head Speed of travel
![Page 9: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/9.jpg)
Design Considerations Resulting surface profile
Skid resistance
Pavement removal and surface profiling
Maintain bridge clearance and curb reveal
![Page 10: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/10.jpg)
Construction Considerations Pavement to be resurfaced
Standard head with normal carbide bits
Standard line and grade requirements
Pavement surface to be turned over to traffic Special heads with more carbide bits Smoothness and grade requirements
in line with HMA wearing course
![Page 11: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/11.jpg)
Construction Considerations How will grade be controlled?
Ski, string line, laser, other
Will ride quality be measured on the milled surface? Profilograph, profiler, none
![Page 12: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/12.jpg)
Poor Milled Surface
![Page 13: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/13.jpg)
Special Multiple Tooth Attachments
![Page 14: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/14.jpg)
Special Multiple Wrap Drum
![Page 15: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/15.jpg)
Review What are typical characteristics of
milling equipment?
Where is cold milling best applied?
What construction and design issues should you be aware of?
![Page 16: Module 3-4 Cold Milling. Learning Objectives Describe the cold milling process Describe the characteristics of typical milling equipment Describe](https://reader036.vdocuments.mx/reader036/viewer/2022062320/56649f585503460f94c7d187/html5/thumbnails/16.jpg)
Key References Collura, J., T. El-Korchi, K. Black, M.
Chase, and L. Jin. 1997. Guidelines for Ride Quality Acceptance of Pavements, Final Report. New England Transportation Consortium, Worcester Polytechnic Institute, Worcester, MA.