Base Course and Sub Base Course of Rigid Pavement

Friday, October 4, 2013 18:59
Posted in category Pavement and Foundation
Views: 3,190 views

Sub Base Course of Rigid Pavement

This is the layer (or layers) under the base layer. The properties and function of this layer are similar to those under flexible roads/pavements. A sub-base is not always needed and therefore may often be omitted.

typical detail of road section base course rigid pavement

Click on the Image to enlarge

Base Course of Rigid Pavement

This is the layer directly below the PCC layer and generally consists of aggregate or stabilized sub-grade.

  • It provides additional load distribution, contributes to drainage, uniform support to the pavement and a stable platform for construction equipment.
  • Bases also help prevent sub grade soil movement due to slab pumping.

Base courses are usually constructed out of

  1. Aggregate base.
  2. Stabilized aggregate or soil.
  3. Dense-graded Hot Mix Asphalt.
  4. Lean concrete.
You can leave a response, or trackback from your own site.

Leave a Reply