Technical Knowledge
cold planer purpose
May 5, 2019

Cold planer is the key machine for pavement milling. Recycling of the road surface is one of the main reasons for milling a road surface. Milling is widely used for pavement recycling today, where the pavement is removed and ground up to be used as the aggregate in new pavement. For asphalt surfaces the product of milling is reclaimed asphalt pavement (RAP), which can be recycled in the asphalt hot mix asphalt (pavement) by combining with new aggregate and asphalt cement (binder) or a recycling agent. This reduces the impact that resurfacing has on the environment.
Milling can also remove distresses from the surface, providing a better driving experience and/or longer roadway life. Some of the issues that milling can remove include:

Raveling: aggregate becoming separated from the binder and loose on the road
Bleeding: the binder (asphalt) coming up to the surface of the road
Rutting: formation of low spots in pavement along the direction of travel usually in the wheel path
Shoving: a washboard like effect transverse to the direction of travel
Ride quality: uneven road surface such as swells, bumps, sags, or depressions
Damage: resulting from accidents and/or fires
It can also be used to control or change the height of part or all of the road. This can be done to control heights and clearances of other road structures such as: curb reveals, manhole and catch basin heights, shoulder and guardrail heights, and overhead clearances. It can also be done to change the slope or camber of the road or for grade adjustments which can help with drainage.
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About the Author: Shandong Vanse Machinery Technology Co., Ltd.
Shandong Vanse Machinery Technology Co., Ltd. is a high-tech manufacturer specializing in concrete construction machinery, including laser screeds and related equipment. The company integrates R&D, production, and global sales, with products exported to over 60 countries and widely used in infrastructure projects worldwide.
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