STP508

    Analysis of Fatigue of Paving Mixtures From the Fracture Mechanics Viewpoint

    Published: Jan 1972


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    Abstract

    The paper discusses application of fracture mechanics to the analysis of fatigue characteristics of paving mixtures. A method of determination of crack growth parameters for asphaltic beams resting on elastic foundation is presented. The finite element method of analysis is used for the determination of stress intensity factors for various crack sizes. The effect of material characteristics, foundation modulus, and mode of loading on the crack growth process of asphaltic mixtures, is discussed. The effect of asphalt content, mixture density, and asphalt penetration on the Paris crack growth law is shown. It is also shown that fracture mechanics principles can be used to predict fatigue life of pavement material.

    Keywords:

    fatigue (materials), paving, cracking (fracturing), aggregates, asphalts, crack propagation, stresses, beams (supports), load control, damage, particle shape, strains, creep properties, bituminous coatings, flexible pavements


    Author Information:

    Majidzadeh, K
    Professor of engineering, research associate, and research associate, Ohio State University, Columbus, Ohio

    Kauffmann, EM
    Professor of engineering, research associate, and research associate, Ohio State University, Columbus, Ohio

    Saraf, CL
    Professor of engineering, research associate, and research associate, Ohio State University, Columbus, Ohio


    Paper ID: STP38809S

    Committee/Subcommittee: D04.39

    DOI: 10.1520/STP38809S


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