Synthesis of design and construction practices

In order to understand and model pavement behavior and responses (e.g., stress, strain, 

available as a freeware, was used to model the mechanistic responses of the composite structures.  

MICH-PAVE is a non-linear finite element software for the analysis of flexible and rigid 

pavements.  The program calculates displacements, stresses, and strains within the pavement 

structure due to a single circular wheel load (Harichandran and Baladi, 2000).  A user-defined 

mesh can be visualized using the software, and the nodes that compose the mesh are used to 

compute pavement responses at specific locations at both vertical and radial distances from the 

applied load.  The software outputs were also compared with those of layered linear elastic 

software prior to using them in this study; the obtained results were very similar. 

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Mechanistic analyses were performed on various composite structures to understand their 

behavior as various rigid bases were used.  The material properties (i.e., elastic modulus, 

Poisson’s ratio) used are given in Table 7.  Because of the extensive experience with this type of 

pavements in the U.K., the composite structure analyzed was based on the U.K. design and 

included the following input parameters: 

 

•  Surface course: HMA layer: 175 mm (7 in) thickness 

•  Base course: (granular, soil cement, CTB, lean mix, RCC, or PCC): 200 mm (8 in) 

•  Subbase: granular subbase: 150 mm (6 in) thickness 

•  Subgrade: compacted subgrade; at least 300 mm (12 in) 

•  Load: one  40-KN (9,000-lb) load with a tire pressure of 0.83 MPa (120 psi) (for 

deflections, two 20-KN [4,500-lb] loads with the same tire pressure were used). 

 

Distress Transfer Functions 

 

 

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