Transcription of Flexible pavement design.ppt
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Flexible pavement design.ppt
Flexible pavement DesignMechanistic Method of pavement DesignAssume pavement ConfigurationCompute pavement ResponsesUsing Structural ModelsCompute AllowableNumber of Repetitions of Standard Axle Using Distress ModelsFind Expected Number ofRepetitions of Standard Axle on Design Lane from Traffic AnalysisDRSatisfactory?Final DesignYesNoInput Material Properties Axle Load Failure Criteria ReliabilityDesign Procedure of IRC Design Approach and Criteria The following three types of pavement distress resulting from repeated application of traffic are considered:(i) Horizontal tensile strain at the bottom of the bituminous layer(ii) Vertical compressive strain at the top of the subgrade(iii) pavement deformation with in the bituminous layer The deformation with in the bituminous layer is assumed to be controlled by meeting the mix design requir
The selection criteria for the grade of bitumen to be used for bituminous courses are given in the ... Hot/Moderate Any Mastic Asphalt 15 ±5 Cold Any Mastic Asphalt 30/40. IRC Pavement Design ... for Type-I Mix (in) HMA Thickness for Type-II & III Mix (in) 10 4 1 2 10 5 1.5 2 10 6 2 3 10 7 2 4 >10 7 2 5.
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