Type of road pavement

Type of road pavement :

This article are contained some information about road pavement. this is very helpful for ssc je examination of civil engineering branch , also helpful others civil engineering related examination. simple questions are asked form this topics so its very important for civil engineering examination.


TYPE OF ROAD PAVEMENT

Road pavements are generally classified into three types :

A)      Flexible Pavement :
·         The  pavements which have very low flextural strength.
·         Flexible in their structural behavior under wheel loads .
·         The pavement deforms if the sub -grade deforms.
·         In flexible p[avements the vertical load of traffic is transmitted to the lower layers by grain to grain transfer.
·         A well compacted granular structure forms a good flexible pavement layer.
·         The load transferring ability of the flexible pavement depends on the type of material and thickness of pavement.
·         Example of flexible pavements are – bituminous pavements, water bound macadam , gravel pavements etc.


B)      Rigid Pavement :
·         Rigid pavements are those which possess considerable flextural strength of flextural rigidity.
·         A rigid pavement derives its capacity to withstand loads from flextural strength.
·         The rigid pavement has the slab action andf is capable of transmitting the loads to wider area.
·         The rigid pavement does not get deformed to the shape of the lower surface as it can bridge the minor variations of the lower layer.
·         Example of rigid pavements are – cement concrete pavements.


C)      Semi Rigid Pavement  :
·         Semi-rigid pavements represent an intermediate state between the flexible and the rigid pavement.
·         The flextural strength of such type of pavement is much lower than the concrete slab.
·         Example of semi-rigid pavements are- lean cement concrete , soil cement and lime -puzzolanic construction etc.


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