Point Of Difference
||Their initial cost is low.
||Their initial cost is high.
||They have short life span.
||They have long life span.
||Their thickness is more.
||Their thickness is less.
||Joints are not required.
||Joints are essentially required.
||A reasonably good subgrade is required.
||A good subgrade is not necessary.
||They are less durable
||They are more durable.
||Stresses are not induced in these pavements due to temperature variations.
||Heavy stresses are induced in these pavements due to temperature variations.
||Easy repair work.
||Difficult to repair.
|Skill and supervision
||Moderate skill and less supervision are required.
||More skill and supervision is required.
|Feasibility of providing underground works
||It is easy to lay, locate or repair underground pipes below these pavements.
||It is very difficult to provide or repair underground pipes below these pavements.
|Openings to traffic after construction
||Can be opened to traffic shortly after construction.
||Require curing after construction and thus cause delay in opening to traffic.
||More resilient to traffic load.
||Less resilient to traffic load.
||They develop corrugations.
||No corrugations are developed in these pavements.
|Behavior with subgrade settlement.
||They adjust according to any deformation of subgrade without rupture.
||They do not adjust according to any deformation of subgrade without rupture.
||They have more tractive resistance.
||They have less tractive resistance.
||Suitable for all types of traffic.
||Noisy under iron wheeled traffic.
||Blacktop pavements provide poor visibility at night.
||They offer good visibility at night.
||They do not usually cause glare due to reflected sunlight.
||They often cause glare due to reflected sunlight.
|Feasibility of stage development
||Stage development is feasible.
||Stage development is not feasible.
|Effect Of loading
||They adjust themselves to normal loading by undergoing elastic deformation.
||They tend to act as a beam or cantilever and resist deformation.
||Maintenance cost is high.
||Maintenance cost is low.