1967 · 15 citations · 0 references
EngineeringCivil EngineeringMechanical Behavior Of MaterialsPavement EngineeringStructural EngineeringAsphalt MaterialsPavement DesignPavement MaterialsPavement Performance AnalysisStrain AnalysisStress-strain BehaviorAsphalt ConcreteInitial Strain AnalysisPavement Strain AnalysisPermanent StrainStress Distribution In Pavement Layers
A new computer program enables the calculation of stresses and strains at various depths and radial distances from the center of a single wheel load following the theory of elasticity. Some of the results have been used to consider the initial strain and change in thickness of asphalt layers under and around single and double wheels. In addition, a simple concept of plasticity has been used to estimate the permanent strain and change in thickness after the removal of the load. The qualitative trends shown are compared with experience gained in practice. Attention is also given to a statistical treatment of wheel loads in Dutch practice and in the thickness design of entirely bituminous road structures intended to carry a given traffic on subgrades of variable CBR value.