The main objective of this paper is to develop a realistic probabilistic framework for characterization of different types of asphalt concrete using advanced material modeling. The adopted methodology builds on and enhances a viscoelastic continuum damage (VECD) material model by utilizing a suite of associated experimental testing protocols and incorporating the uncertainties associated with the different material properties. The modeled uncertainties address the variabilities and errors associated with the linear viscoelastic (LVE) functions achieved from the complex modulus test and damage characteristic curves obtained from constant crosshead rate testing. A probabilistic scheme using First Order approximations and Monte Carlo simulations is developed to characterize the inherent uncertainty of each of the LVE functions over the time domain of their mastercurves. For damage characteristic curves, the uncertainty in normalized pseudostiffness increases as the level of damage becomes larger. The uncertainties of LVE properties are propagated along with those of C versus stress curves to yield a probabilistic viscoelastic continuum damage model (P-VECD). The P-VECD not only predicts the average viscoelastic response to a given loading input, but it can also provide its distribution, which is essential for a reliability-based pavement design.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Development of Probabilistic Viscoelastic Continuum Damage Model for Asphalt Concrete


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2019-04-04




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Simplified Viscoelastic Continuum Damage Model as Platform for Asphalt Concrete Fatigue Analysis

    Underwood, B. Shane / Baek, Cheolmin / Kim, Y. Richard | Transportation Research Record | 2012


    Probabilistic modeling of viscoelastic behavior of asphalt concrete

    Kassem, H. A. / Chehab, G. R. / Najjar, S. S. | TIBKAT | 2018



    Characterizing Fatigue of Asphalt Binders with Viscoelastic Continuum Damage Mechanics

    Wen, Haifang / Bahia, Hussain | Transportation Research Record | 2009


    Continuum Coupled Moisture–Mechanical Damage Model for Asphalt Concrete

    Shakiba, Maryam / Al-Rub, Rashid K. Abu / Darabi, Masoud K. et al. | Transportation Research Record | 2013