Types of Pavement Systems
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Types of Pavement Systems include Flexible Pavements, Rigid Pavements, Semi Rigid Pavements, and Composite Pavements. Flexible Pavement typically consists of Tack Coat, Surface Course, Prime Coat, Binder or Intermediate Course, Base Course, Subbase Course, and Compacted Subgrade. The Surface Course is made of superior quality material such as fine asphalt mix and provides smoothness, friction, and drainage. It resists ______ under traffic loading and provides waterproofing.

distortion

In Flexible Pavement, the Binder Course provides most of the asphalt concrete structure with less quality material such as coarse asphalt mix. Its main function is to distribute load to the ______ course.

base

The Base Course in Flexible Pavement is made of crushed stones, gravel, limestone, etc. It provides additional load distribution and contributes to the sub-surface ______.

drainage

The Subbase Course in Flexible Pavement is made of sandy or sandy gravel soils. It provides structural support, reduces the intrusion of fines into the pavement structure, and is not always ______.

<p>needed</p> Signup and view all the answers

The Tack Coat in Flexible Pavement is made of cutback asphalt or asphalt emulsion and provides bonding between the surface and the binder course layers. The application rate is 0.10 to 0.20 liter/m2 for new pavement. It helps in rapid curing and provides ______.

<p>bonding</p> Signup and view all the answers

The Prime Coat in Flexible Pavement is made of cutback asphalt and provides bonding between the binder course and base layers. The application rate is 0.50 to 0.75 liter/m2. It helps preserve the asphalt cement in the binder course layer and assists in ______.

<p>curing</p> Signup and view all the answers

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