Viscoelastic Analysis of Full-Scale Pavements: Validation of VEROAD

Abstract

VEROAD, a linear viscoelastic multilayer computer program, takes the time dependence of road building materials into consideration. VEROAD calculates the responses (displacements, stresses, and strains) of a pavement structure subjected to a moving, sliding load. The validation of VEROAD (for longitudinal and transversal strain results) is described. The calculated strains were compared with measured strains from two full-scale pavement tests: the road track machine test in Denmark and the linear tracking apparatus test in the Netherlands. Measurements from these tests indicate distinct viscoelastic strain curves, that is, time retardation and asymmetry. The study indicates that VEROAD is able to calculate the pavement behavior (both longitudinal and transversal strains) as it was measured in these two full-scale tests. VEROAD-calculated strain curves have the same shape as the measured curves.

Get full access to this article

View all access options for this article.

References

Hopman

P. C.

VEROAD: A Linear Visco-Elastic Multi-Layer Program for the Calculation of Stresses, Strains and Displacements in Asphaltic Road Constructions, Part I: A Visco-Elastic Halfspace. Delft University of Technology, The Netherlands, Dec. 1993.

Hopman

P. C.

VEROAD: A Linear Visco-Elastic Multi-Layer Program for the Calculation of Stresses, Strains and Displacements in Asphaltic Road Constructions, Part II: A Visco-Elastic Multi-Layer System. Delft University of Technology, The Netherlands, Nov. 1994.

Hopman

P. C.

Review of Modeling the Mechanical Parameters of Asphalt Material. Proc., 17th ARRB Conference, Part 3, 1994.

Cadot

, Verbogt

, and Hopman

P.C.

. VEROAD: Implementation of a Computer Program to Calculate Displacements, Stresses and Strains in a Visco-Elastic Multi-Layer System. Delft University of Technology, The Netherlands, Jan. 1995.

Huang

Y. H.

Pavement Analysis and Design. Prentice-Hall, Inc., N.J., 1993.

Rowe

G. M.

, Brown

S. F.

, Sharrock

M. J.

, and Bouldin

M. G.

. Viscoelastic Analysis of Hot Mix Asphalt Pavement Structures. In Transportation Research Record 1482, TRB, National Research Council, Washington D.C., 1995.

Krarup

Bearing Capacity and Water, Part I, Materials, Construction and Instrumentation. Note 238. The Danish Road Institute, Roskilde, Denmark, 1992.

Krarup

Bearing Capacity and Water, Part II, Measured Response. Note 249. The Danish Road Institute, Roskilde, Denmark, 1994.

Groenendijk

, Vogelzang

C. H.

, Molenaar

A. A. A.

, and Dohmen

L. J. M.

. Performance Tests Under Accelerated Loading with the LINTRACK Test Facility in the Netherlands. Presented at 4th International Conference on the Bearing Capacity of Roads and Airfields, Minneapolis, Minn., July 17–21, 1994.

10.

Huhtala

, Alkio

, Pihlajamäki

, Pienimäki

, and Halonan

. Behavior of Bituminous Materials Under Moving Wheel Loads. Journal of the Association of Asphalt Paving Technologists, Vol. 59, 1990, pp. 422–442.

11.

Mork

Analyse av Lastresponsar for Vegkonstruktioner. Ph.D. thesis. Norges Tekniske Högskole, Trondheim, Norway, 1990.

12.

Alavi

S. H.

, and Monismith

C. L.

. Time and Temperature Dependent Properties of Asphalt Concrete Mixes Tested as Hollow Cylinders and Subjected to Dynamic Axial and Shear Loads. Journal of the Association of Asphalt Paving Technologists, Vol. 63, 1994, pp. 152–175.

13.

Sayegh

Viscoelastic Properties of Bituminous Mixtures. Proc., 2nd International Conference on Structural Design of Asphalt Pavements, Ann Arbor, Mich., 1967.

14.

Kim

Y. R.

, and Lee

Y. C.

. Interrelationships Among Stiffness of Asphalt-Aggregate Mixtures. Submitted to The Journal of Association of Asphalt Paving Technologies, 1995.