Three-Dimensional Microstructural Modeling Framework for Dense-Graded Asphalt Concrete Using a Coupled Viscoelastic, Viscoplastic, and Viscodamage Model
Publication: Journal of Materials in Civil Engineering
Volume 26, Issue 4
Abstract
This paper presents a three-dimensional (3D) image-based microstructural computational modeling framework to predict the thermoviscoelastic, thermoviscoplastic, and thermoviscodamage response of asphalt concrete. X-ray computed tomography is used to scan dense-graded asphalt concrete (DGA) to obtain slices and planar images, from which the 3D microstructure is reconstructed. Image processing techniques are used to enhance the quality of images in terms of phase identification and separation of particles. This microstructure is divided into two phases: aggregate and matrix. The aggregate phase is modeled as an elastic material and the matrix phase is modeled as a thermoviscoelastic, thermoviscoplastic, and thermodamage material. Stress-strain response, damage propagation, and the distributions of the viscoelastic and viscoplastic strains are predicted by performing virtual uniaxial and repeated creep-recovery tests of the developed 3D model of asphalt concrete. The effects of loading rate, temperature, and loading type on the thermomechanical response of asphalt concrete are investigated. In addition, the microscopic and macroscopic responses of DGA are compared with those of stone matrix asphalt (SMA). The results demonstrate that SMA can sustain higher strain levels at the microscopic level and higher macroscopic ultimate strength. The damage in SMA is more localized than in DGA. The microstructure-based framework presented in this paper can be used to offer insight on the influence of the distribution and properties of microscopic constituents on the macroscopic behavior of asphalt concrete.
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Acknowledgments
Authors would like to acknowledge the financial support provided by Qatar National Research Fund (QNRF) through the National Priority Research Program project 08-310-2-110. The QNRF funding supported the developed micromechanical modeling presented in this study. In addition, the authors acknowledge the partial support of the U.S. Federal Highway Administration through the Asphalt Research Consortium (ARC). The ARC funding supported the development of the constitutive model presented in this study. Finally, the authors acknowledge the Texas A&M Supercomputing Facility (http://sc.tamu.edu/) for providing computing resources useful in conducting the research reported in this paper.
References
ABAQUS 6.8 [Computer software]. Providence, RI, Habbit, Karlsson and Sorensen.
Abu Al-Rub, R. K., Darabi, M. K., Little, D. N., and Masad, E. A. (2010). “A micro-damage healing model that improves prediction of fatigue life in asphalt mixes.” Int. J. Eng. Sci., 48(11), 966–990.
Abu Al-Rub, R. K., Darabi, M. K., You, T., Masad, E. A., and Little, D. N. (2011a). “A unified continuum damage mechanics model for predicting the mechanical response of asphalt mixtures and pavements.” Int. J. Roads Airports, 1(1), 68–84.
Abu Al-Rub, R. K., Masad, E. A., and Huang, C. W. (2009). “Improving the sustainability of asphalt pavements through developing a predictive model with fundamental material properties.” Final Rep. Submitted to Southwest Univ. Transportation Center, Rep. SWUTC/08/476660-0007-1, Southwest Region Univ. Transportation Center, TX.
Abu Al-Rub, R. K., You, T., Masad, E. A., and Little, D. N. (2011b). “Mesomechanical modeling of the thermo-viscoelastic, thermo-viscoplastic, and thermo-viscodamage response of asphalt concrete.” Int. J. Adv. Eng. Sci. Appl. Math., 3(1–4), 14–33.
Adhikari, S., and You, Z. (2010). “3D discrete element models of the hollow cylindrical asphalt concrete specimens subject to the internal pressure.” Int. J. Pav. Eng., 11(5), 429–439.
Adhikari, S., and You, Z. (2011). “Investigating the sensitivity of aggregate size within sand mastic by modeling the microstructure of an asphalt mixture.” J. Mater. Civ. Eng., 580–586.
Avizo 7.0 [Computer software]. Vordeaux, France, Visualization Sciences Group.
Bhasin, A., Little, D. N., Bommavaram, R., and Vasconcelos, K. (2008). “A framework to quantify the effect of healing in bituminous materials using material properties.” Road Mater. Pav. Des., 9(1), 219–242.
Collop, A., McDowell, G., and Lee, Y. (2006). “Modelling dilation in an idealised asphalt mixture using discrete element modelling.” Granular Matter, 8(3), 175–184.
Collop, A., McDowell, G., and Lee, Y. (2007). “On the use of discrete element modelling to simulate the viscoelastic deformation behaviour of an idealized asphalt mixture.” Geomech. Geoeng., 2(2), 77–86.
Collop, A. C., Scarpas, A., Kasbergen, C., and de Bondt, A. (2003). “Development and finite element implementation of stress-dependent elastoviscoplastic constitutive model with damage for asphalt.” Transportation Research Record 1832, Transportation Research Board, Washington, DC, 96–104.
Dai, Q. (2011a). “Three-dimensional micromechanical finite-element network model for elastic damage behavior of idealized stone-based composite materials.” J. Eng. Mech., 410–421.
Dai, Q. (2011b). “Two-and three-dimensional micromechanical viscoelastic finite element modeling of stone-based materials with X-ray computed tomography images.” Constr. Build. Mater., 25(2), 1102–1114.
Darabi, M. K., Abu Al-Rub, R. K., Masad, E. A., Huang, C. W., and Little, D. N. (2011). “A thermo-viscoelastic-viscoplastic-viscodamage constitutive model for asphaltic materials.” Int. J. Solids Struct., 48(1), 191–207.
Darabi, M. K., Abu Al-Rub, R. K., Masad, E. A., and Little, D. N. (2012a). “A thermodynamic framework for constitutive modeling of time- and rate-dependent materials. Part II: Numerical aspects and application to asphalt concrete.” Int. J. Plast., 35, 67–99.
Darabi, M. K., Abu Al-Rub, R. K., Masad, E. A., and Little, D. N. (2012b). “Thermodynamic-based model for coupling temperature-dependent viscoelastic, viscoplastic, and viscodamage constitutive behavior of asphalt mixtures.” Int. J. Numer. Anal. Methods Geomech., 36(7), 817–854.
Dessouky, S., Masad, E., Little, D., and Zbib, H. (2006). “Finite-element analysis of hot mix asphalt microstructure using effective local material properties and strain gradient elasticity.” J. Eng. Mech., 158–171.
Dessouky, S. H. (2005). “Multiscale approach for modeling hot mix asphalt.” Ph.D. dissertation, Texas A&M Univ, College Station, TX.
Gatchalian, D., Masad, E., Chowdhury, A., and Little, D. (2006). “Characterization of aggregate resistance to degradation in stone matrix asphalt mixtures.” Research Rep., International Center for Aggregate Research, Texas Transportation Institute, College Station, TX.
Liu, Y., and You, Z. (2009). “Visualization and simulation of asphalt concrete with randomly generated three-dimensional models.” J. Comput. Civ. Eng., 340–347.
Liu, Y., and You, Z. (2011a). “Accelerated discrete-element modeling of asphalt-based materials with the frequency-temperature superposition principle.” J. Eng. Mech., 355–365.
Liu, Y., and You, Z. (2011b). “Discrete-element modeling: Impacts of aggregate sphericity, orientation, and angularity on creep stiffness of idealized asphalt mixtures.” J. Eng. Mech., 294–303.
Mo, L., Huurman, M., Wu, S., and Molenaar, A. (2008). “2D and 3D meso-scale finite element models for ravelling analysis of porous asphalt concrete.” Finite Elem. Anal. Des., 44(4), 186–196.
Perl, M., Uzan, J., and Sides, A. (1983). “Visco-elasto-plastic constitutive law for bituminous mixture under repeated loading.” Transportation Research Record 911, Transportation Research Board, Washington, DC, 20–26.
Perzyna, P. (1971). “Thermodynamic theory of viscoplasticity.” Adv. Appl. Mech., 11, 313–354.
Schapery, R. (1969). “On the characterization of nonlinear viscoelastic materials.” Polym. Eng. Sci., 9(4), 295–310.
Wang, L. (2008). “Digital specimen and multiple functional digital tester technique for performance evaluation of asphalt mixes.” Final Rep. for Highway IDEA Project I22, Trasportation Research Board of the National Academies, Washington, DC.
Wu, J., Collop, A. C., and McDowell, G. R. (2011). “Discrete element modeling of constant strain rate compression tests on idealized asphalt mixture.” J. Mater. Civ. Eng., 2–11.
You, T., Abu Al-Rub, R. K., Darabi, M. K., Masad, E. A., Little, D. N. (2012). “Three-dimensional microstructural modeling of asphalt concrete using a unified viscoelastic–viscoplastic–viscodamage model.” Constr. Build. Mater., 28(1), 531–548.
You, Z., Adhikari, S., and Dai, Q. (2008). “Three-dimensional discrete element models for asphalt mixtures.” J. Eng. Mech., 1053–1063.
You, Z., Adhikari, S., and Emin Kutay, M. (2009). “Dynamic modulus simulation of the asphalt concrete using the X-ray computed tomography images.” Mater. Struct., 42(5), 617–630.
You, Z., Liu, Y., and Dai, Q. (2011). “Three dimensional microstructural based discrete element viscoelastic modeling of creep compliance tests for asphalt mixtures.” J. Mater. Civ. Eng., 79–87.
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Published In
Journal of Materials in Civil Engineering
Volume 26 • Issue 4 • April 2014
Pages: 607 - 621
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jul 23, 2012
Accepted: May 21, 2013
Published online: May 23, 2013
Discussion open until: Oct 23, 2013
Published in print: Apr 1, 2014
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