Relating full-scale pavement rutting to laboratory permanent deformation testing

Leena Korkiala-Tanttu (Corresponding Author), A. Dawson

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

The study concerns the full-scale testing of a low-volume road pavement using the heavy vehicle simulator (HVS-Nordic) and the complementary testing of the same materials in the laboratory, especially using a repeated load triaxial test. The objective of the study was to develop an analytical method of calculating the permanent deformations on the basis of the stresses calculated by a finite element program, using input data obtained from laboratory assessments. It was found that the growth of permanent deformation as a function of load repetitions can be estimated using Sweere's Formula, but that an allowance for the stress state needs to be made. This was achieved by allowing a stress dependency in Sweere's parameter b, as a function of the failure ratio q/qf. It is shown that this can be estimated with a simple linear function according to the HVS and laboratory results. The resilient moduli needed for the finite element calculations were back-calculated from in situ loading tests. Both resilient and permanent deformations proved to be bigger in the HVS tests than those suggested from the laboratory tests. (17 refs.)
Original languageEnglish
Pages (from-to)19-28
JournalInternational Journal of Pavement Engineering
Volume8
Issue number1
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

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Pavements
Testing
Simulators

Keywords

  • Pavements
  • Deformation
  • Finite element method
  • Parameter estimation
  • Roads and streets
  • Stresses

Cite this

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title = "Relating full-scale pavement rutting to laboratory permanent deformation testing",
abstract = "The study concerns the full-scale testing of a low-volume road pavement using the heavy vehicle simulator (HVS-Nordic) and the complementary testing of the same materials in the laboratory, especially using a repeated load triaxial test. The objective of the study was to develop an analytical method of calculating the permanent deformations on the basis of the stresses calculated by a finite element program, using input data obtained from laboratory assessments. It was found that the growth of permanent deformation as a function of load repetitions can be estimated using Sweere's Formula, but that an allowance for the stress state needs to be made. This was achieved by allowing a stress dependency in Sweere's parameter b, as a function of the failure ratio q/qf. It is shown that this can be estimated with a simple linear function according to the HVS and laboratory results. The resilient moduli needed for the finite element calculations were back-calculated from in situ loading tests. Both resilient and permanent deformations proved to be bigger in the HVS tests than those suggested from the laboratory tests. (17 refs.)",
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Relating full-scale pavement rutting to laboratory permanent deformation testing. / Korkiala-Tanttu, Leena (Corresponding Author); Dawson, A.

In: International Journal of Pavement Engineering, Vol. 8, No. 1, 2007, p. 19-28.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Korkiala-Tanttu, Leena

AU - Dawson, A.

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AB - The study concerns the full-scale testing of a low-volume road pavement using the heavy vehicle simulator (HVS-Nordic) and the complementary testing of the same materials in the laboratory, especially using a repeated load triaxial test. The objective of the study was to develop an analytical method of calculating the permanent deformations on the basis of the stresses calculated by a finite element program, using input data obtained from laboratory assessments. It was found that the growth of permanent deformation as a function of load repetitions can be estimated using Sweere's Formula, but that an allowance for the stress state needs to be made. This was achieved by allowing a stress dependency in Sweere's parameter b, as a function of the failure ratio q/qf. It is shown that this can be estimated with a simple linear function according to the HVS and laboratory results. The resilient moduli needed for the finite element calculations were back-calculated from in situ loading tests. Both resilient and permanent deformations proved to be bigger in the HVS tests than those suggested from the laboratory tests. (17 refs.)

KW - Pavements

KW - Deformation

KW - Finite element method

KW - Parameter estimation

KW - Roads and streets

KW - Stresses

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