Introduction to pavement materials. Different types of materials used in the construction of roads and highways. Learn what are different types of materials and what are requirements of materials used in the pavement construction.

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2.  It is a civil engineering structure that is used
by the pedestrians and vehicles for
commuting and transporting loads from one
place to another place.

3.  Consists of different layers
 Embankment
 Sub-grade
 Sub base
 Base
 Wearing course
 Different types of materials are used
depending on the layer requirement.

5.  Soil
 Sand
 Stone aggregates
 Cement
 Bitumen
 Tiles etc.,

6.  Pavement subjected to various conditions
 Weather changes
 Impact loads
 Imposed loads etc.

7.  Should not undergo excessive deformation
and settlement
 Differential settlement – failure of pavement
 Hence, high compressibility and plastic
properties are not desirable for pavement
construction
 Good quality soil is required

8.  Soil is the main constituent in Subgrade and
embankment
 Aggregates are used in the Sub base and base
layer
 Aggregates and binding material in the top
layer

9.  Sub grade and embankment provides
support for the pavement
 Different types of failures such as rutting and
shoving in the flexible pavements, cracking in
the rigid (concrete) pavements are due to
poor sub grade soil.
 Aggregate does have impact on the life and
service of the pavement.

10.  Soil as pavement material
 Importance
 Desirable properties
 Tests on Soil

11.  Thanks .