الفهرس | Only 14 pages are availabe for public view |
Abstract Theoretical analyses to determine stresses in flexible pavements from the principles of engineering mechanics were begun by Bouissines.’4in 1885. He assumed- homogenous t elastic material (obeys Hook’s law), and the pavement and the underlying 80il is a single layered isotropic material. In 1948, D.M. Burmister, E.S.Barber, and others (Oglesby & Hewes. 1966):t: modified and extended thls analysis to 1nclul e nOnisotropic materials and multilayer systems and to reconcile theoretical and observed results • Burmister solved the problem of flexible pavement compo aed of two layers • Stress and deflection values as obtained by Burmister are dependent upon the strength ratio of the layers El/E2t where El and E2 are the modulii of elasticity of the reinforcingmd eubgrade layers, respectively. |