Abstract
The report discusses the principles of two major theories of fracture mechanics of bodies with cracks, which include the theory of accumulation of damage Kachanov–Rabotnov and theory of brittle fracture Griffith–Irwin, including the invariant integral Cherepanov–Rice, describing the criterion of growth the crack. To assess the application of these theories to the calculation of asphalt concrete, laboratory test data are given and based on their analysis the appropriate conclusions.
Highlights
In practice of design of non-rigid pavement type with asphalt concrete coating and the base is required to check the strength of the lower layer by the criterion of resistance to fatigue fracture during bending [1]
It follows that when applied to the calculation of asphalt concrete pavement theory of bending of thin plates, only one tensile stress is introduced into the strength criterion, and the effect of the second tensile stress which weakening the first one is not taken into account
The authors aim to assess the possibility of application for the calculation of asphalt concrete layers on the strength and plasticity, the theories of fracture mechanics of bodies with cracks
Summary
In practice of design of non-rigid pavement type with asphalt concrete coating and the base is required to check the strength of the lower layer by the criterion of resistance to fatigue fracture during bending [1]. This criterion applies the first strength theory, according to which the maximum normal horizontal stress should not exceed the fatigue strength of asphalt concrete in the lower layer of the coating or base. According to experts in the field of phenomenological theories of strength, the criterion of the maximum normal stresses has a purely historical significance [3]
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call