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How does proper compaction affect the life of asphalt pavement?

Compaction affects the density of any material, and the more dense a material is, the stronger, more stable it is. And such is the case with the sub-base materials, base material, and hot mix asphalt, all of which make up asphalt pavement. The key to proper compaction is to eliminate or expel air voids from the material, thus forcing the particles close together. Increasing the density gives soil, base material, and asphalt: greater strength for supporting heavier loads, reduced settlement over the life of the pavement, less permeability to water and air, and resistance to rutting. Pages can be written about the proper methods and equipment for achieving proper compaction, and for that reason, we are providing this link to an interesting and informative article published by the State of Wisconsin Dept. of Transportation.


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