WHAT ARE THE CHARACTERISTICS OF SURFACE COURSE IN ASPHALT PAVEMENT?

The surface course is the topmost structural layer in asphalt pavement. In most cases it is the top layer of the pavement and also acts as a wear course. Since it is exposed to direct traffic and environmental forces, it must be produced with the highest quality materials.

surface course characteristic
surface course characteristic

Characteristics of Surface Course

The surface course for asphalt pavement must provide the following characteristics.

  • Sufficient wet weather abrasion for protection
  • High resistance to load-induced rooting, shoveling and surface cracking
  • High resistance to thermally induced cracking
  • Low permeability to reduce surface-water infiltration
  • High durability to resist disintegration due to the combined effects of aging, traffic loading and freeze-thaw effects.
  • Suitable surface texture for noise control, safety and aesthetics
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Er. Mukesh Kumar

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Er. Mukesh Kumar is Editor in Chief and Co-Funder at ProCivilEngineer.com Civil Engineering Website. Mukesh Kumar is a Bachelor in Civil Engineering From MIT. He has work experience in Highway Construction, Bridge Construction, Railway Steel Girder work, Under box culvert construction, Retaining wall construction. He was a lecturer in a Engineering college for more than 6 years.