[2] A pavement structure composed of the following three layers: (5.75 in) HMA with elastic modulus 400,000 psi, (23 in) granular base with elastic modulus 20,000 psi, and a subgrade with elastic modulus 10,000 psi. All layers are assumed to have a Poisson ratio of 0.5. Calculate the maximum horizontal tensile strain at the bottom of HMA and the maximum vertical compressive strain on the top of subgrade under a 40,000-lb wheel load and 150-psi contact pressure.

Q: 51. Describe the process for the multiple stress creep recovery (MSCR) test on asphalt binder.

A: The Multiple Stress Creep Recovery (MSCR) test is a procedure used to evaluate the high-temperature…

Q: 20. In the PCA design procedure of rigid highway pavements, the fatigue damage analysis is based on…

A: The Fatigue damage analysis used in the PCA Pavement design method is based on the edge stress…

Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.