minimum thickness of asphalt and basecourse layers

E.sama

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What is the minimum thickness of asphalt and basecourse layers according to ESAL of the road​
 

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27 يونيو 2006
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There is no minimum.
However as rule of thumb you should keep at least 5 cm of asphalt and 15 cm of base and 15 cm of subbase
this is for low ESAL less than 10,000
to make sure about this assumption, do the AASHTO design and you will find it ok,
as you know when the ESAL goes up the Asphalt thickness will follow to accomodate the load

also don't forget to check always for Asphalt overstress

where you overall pavement design shows good SN but the thickness of asphalt is less than 5cm and can't take the ESAL
 
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E.sama

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27 أكتوبر 2009
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شكرا لك م. ضياء
 
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28 أبريل 2010
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Besides, from practical point of view the minimum applicable thickness of asphalt mix could be laid by the finisher easily and without difficencies is approx.45mm depends on the max. nominal size of aggregate used in mix design
 
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