Asphalt Mixes Deformation Sensitivity to Change in Rheological Parameters
Publication: Journal of Materials in Civil Engineering
Volume 17, Issue 1
Abstract
An algorithm for determining the rheological parameters of asphalt mixes in the creep test in the Nottingham Asphalt Tester (NAT) is presented. It was found that the smallest errors in identification of the rheological parameters are made for the third cycle of loading. The determined rheological parameters were verified by testing the mixes in the French Pavement Rutting Tester (FPRT), for which a rutting test model based on the finite-element method (FEM) was developed. Also the deformability of the asphalt mixes tested in the FPRT is analyzed. It is found that the viscosity coefficient and the delayed elasticity coefficient have a significant effect on rut depth in the rutting tester model. An analysis of the deformation sensitivity of the viscoelastic courses in a pavement structure model shows that the binder course’s rheological parameters, especially the viscosity coefficient , contribute most to rutting in the pavement. The deformation of this course is determined by the duration of the load. The deformation of the wearing course is influenced by the delayed elasticity modulus , and it depends mainly on the time between cycles of loading.
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References
Blab, R., and Harvey, J. T. (2002). “Viscoelastic rutting model with improved loading assumptions.” Proc., 9th Int. Conf. on Asphalt Pavements, International Society for Asphalt Pavements, White Bear Lake, Minn.
Collop, A. C., Cebon, D., and Hardy, M. S. (1995). “Viscoelastic approach to rutting in flexible pavements.” J. Transp. Eng., 121(1), 82–93.
Cooper Research Technology, Ltd. (1998). Nottingham asphalt tester manual, Derbyshire, U.K.
French Standard. (1998). “Essai relatifs aux chaussées: Deformation permanente des mélange hydrocarbonés: essai d’ornierage.” p. 98–253–1, France (in French).
Hopman, P. C., Nilsson, R. N., and Pronk, A. C. (1997). “Theory, validation, and application of the visco-elastic multilayer program VEROAD.” Proc., 8th Int. Conf. on Asphalt Pavements, International Society for Asphalt Pavements, White Bear Lake, Minn.
Laboratoire Central des Ponts et Chaussées (LCPC). (1994). “Conception et dimensionnement des structures de chaussées.” Guide technique, Paris (in French).
Monismith, C. L., Alexander, R. L., and Secor, K. E. (1966). “Rheologic behaviour of asphalt concrete.” Proc., Association of Asphalt Paving Technologists, 35.
Pagen, C. A. (1965). “Rheological response of bituminous concrete.” Highway Research Record, 67, Highway Research Board, Washington, D.C.
Polish Standard. (2000). “Road and airfield: bituminous pavements: requirements.” PN–S–96025, Poland.
Rowe, G. M., Brown, S. F., Sharrock, M. J., and Bouldin, M. G. (1995). “Visco-elastic analysis of hot mix asphalt pavement structures.” Transportation Research Record 1482, Transportation Research Board, Washington, D.C.
Sousa, J. B., Weissman, S. L., Sackman, J. L., and Monismith, C. L. (1993). “A nonlinear elastic viscous with damage model to predict permanent deformation of asphalt concrete mixes.” Proc., 72nd Annual Meeting, Transportation Research Board, Washington, D.C.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 17 • Issue 1 • February 2005
Pages: 1 - 9
Copyright
© 2005 ASCE.
History
Received: Sep 24, 2003
Accepted: Jun 7, 2004
Published online: Feb 1, 2005
Published in print: Feb 2005
Notes
Note. Associate Editor: Eyad Masad
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