Flexible Pavement Analysis.

Part I describes the pavement analysis program DEFPAV. The development of pavement models for two sections of road is described in detail; they predict the values of transient deflection and rut depth growth. The use of the program in analyzing the effect of surface temperature on transient deflections is described. An investigation of the effect of crack propagation through a bituminous surface layer is also reported. Part II describes a method of overlay thickness selection for flexible pavements. A rational selection of bituminous overlay may be made with the aid of a transient deflection measurement and a single computational procedure which is suitable for use on a modern programmable calculation. (Author)