Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model

Tian Hou, B. Shane Underwood, Y. Richard Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

74 Citations (Scopus)

Abstract

Fatigue performance modeling is a major topic in the field of asphalt concrete modeling work. Currently, the only standard fatigue test available for asphalt concrete mixtures is the flexural bending fatigue test, AASHTO T-321. Several issues are associated with flexural fatigue testing, the most important being that the stress state is not uniform but varies with the depth of the specimen, and that the beam specimen fabrication equipment is not widely available. Viscoelastic continuum damage (VECD) fatigue testing is a promising alternative to flexural fatigue testing. Different researchers have successfully applied the VECD model to asphalt concrete mixtures using constant crosshead rate direct tension tests. However, due to the load level limitation of the newly released Asphalt Mixture Performance Tester (AMPT) testing equipment, there is an immediate need to develop a model that can characterize fatigue performance quickly using cyclic test data. In this study, a simplified VECD model, developed at North Carolina State University, is applied to various North Carolina mixtures that are part of the NCDOT project, Local Calibration of the MEPDG for Flexible Pavement Design. A failure criterion that is based on pseudo stiffness is developed from the test data. The application of the VECD model using this failure criterion results in very good agreement between the measured and predicted fatigue life for the eleven mixtures. In addition, a completely independent verification study is conducted for the FHWA ALF mixtures, including both unmodified and modified mixtures. Again, it is found that the simplified VECD model predicts the fatigue life of the ALF mixtures well. It is shown that the simplified VECD model based on the data from a single temperature and a single strain level can predict fatigue test results fairly accurately under various temperature conditions and at various strain levels. It is also shown that the model can be utilized further to simulate both controlled strain and controlled stress direct tension fatigue testing and gain insight into the impact of various mixture design variables, such as asphalt content, binder grade, NMAS, and the inclusion of RAP materials, on the fatigue performance.

Original languageEnglish (US)
Title of host publicationAsphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions
Pages35-73
Number of pages39
Volume79
StatePublished - 2010
Externally publishedYes
EventAsphalt Paving Technology 2010, AAPT - Sacramento, CA, United States
Duration: Mar 7 2010Mar 10 2010

Other

OtherAsphalt Paving Technology 2010, AAPT
CountryUnited States
CitySacramento, CA
Period3/7/103/10/10

Fingerprint

Fatigue of materials
Fatigue testing
Asphalt concrete
Concrete mixtures
Equipment testing
Asphalt mixtures
Tensile testing
Asphalt
Pavements
Binders
Stiffness
Calibration
Fabrication
Temperature

Keywords

  • Asphalt
  • Fatigue
  • Simplified model
  • Viscoelastic continuum damage

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Hou, T., Underwood, B. S., & Kim, Y. R. (2010). Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model. In Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions (Vol. 79, pp. 35-73)

Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model. / Hou, Tian; Underwood, B. Shane; Kim, Y. Richard.

Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions. Vol. 79 2010. p. 35-73.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hou, T, Underwood, BS & Kim, YR 2010, Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model. in Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions. vol. 79, pp. 35-73, Asphalt Paving Technology 2010, AAPT, Sacramento, CA, United States, 3/7/10.
Hou T, Underwood BS, Kim YR. Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model. In Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions. Vol. 79. 2010. p. 35-73
Hou, Tian ; Underwood, B. Shane ; Kim, Y. Richard. / Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model. Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions. Vol. 79 2010. pp. 35-73
@inproceedings{80e4f3c09f434ef38757450ce28d5138,
title = "Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model",
abstract = "Fatigue performance modeling is a major topic in the field of asphalt concrete modeling work. Currently, the only standard fatigue test available for asphalt concrete mixtures is the flexural bending fatigue test, AASHTO T-321. Several issues are associated with flexural fatigue testing, the most important being that the stress state is not uniform but varies with the depth of the specimen, and that the beam specimen fabrication equipment is not widely available. Viscoelastic continuum damage (VECD) fatigue testing is a promising alternative to flexural fatigue testing. Different researchers have successfully applied the VECD model to asphalt concrete mixtures using constant crosshead rate direct tension tests. However, due to the load level limitation of the newly released Asphalt Mixture Performance Tester (AMPT) testing equipment, there is an immediate need to develop a model that can characterize fatigue performance quickly using cyclic test data. In this study, a simplified VECD model, developed at North Carolina State University, is applied to various North Carolina mixtures that are part of the NCDOT project, Local Calibration of the MEPDG for Flexible Pavement Design. A failure criterion that is based on pseudo stiffness is developed from the test data. The application of the VECD model using this failure criterion results in very good agreement between the measured and predicted fatigue life for the eleven mixtures. In addition, a completely independent verification study is conducted for the FHWA ALF mixtures, including both unmodified and modified mixtures. Again, it is found that the simplified VECD model predicts the fatigue life of the ALF mixtures well. It is shown that the simplified VECD model based on the data from a single temperature and a single strain level can predict fatigue test results fairly accurately under various temperature conditions and at various strain levels. It is also shown that the model can be utilized further to simulate both controlled strain and controlled stress direct tension fatigue testing and gain insight into the impact of various mixture design variables, such as asphalt content, binder grade, NMAS, and the inclusion of RAP materials, on the fatigue performance.",
keywords = "Asphalt, Fatigue, Simplified model, Viscoelastic continuum damage",
author = "Tian Hou and Underwood, {B. Shane} and Kim, {Y. Richard}",
year = "2010",
language = "English (US)",
volume = "79",
pages = "35--73",
booktitle = "Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions",

}

TY - GEN

T1 - Fatigue performance prediction of North Carolina mixtures using the simplified viscoelastic continuum damage model

AU - Hou, Tian

AU - Underwood, B. Shane

AU - Kim, Y. Richard

PY - 2010

Y1 - 2010

N2 - Fatigue performance modeling is a major topic in the field of asphalt concrete modeling work. Currently, the only standard fatigue test available for asphalt concrete mixtures is the flexural bending fatigue test, AASHTO T-321. Several issues are associated with flexural fatigue testing, the most important being that the stress state is not uniform but varies with the depth of the specimen, and that the beam specimen fabrication equipment is not widely available. Viscoelastic continuum damage (VECD) fatigue testing is a promising alternative to flexural fatigue testing. Different researchers have successfully applied the VECD model to asphalt concrete mixtures using constant crosshead rate direct tension tests. However, due to the load level limitation of the newly released Asphalt Mixture Performance Tester (AMPT) testing equipment, there is an immediate need to develop a model that can characterize fatigue performance quickly using cyclic test data. In this study, a simplified VECD model, developed at North Carolina State University, is applied to various North Carolina mixtures that are part of the NCDOT project, Local Calibration of the MEPDG for Flexible Pavement Design. A failure criterion that is based on pseudo stiffness is developed from the test data. The application of the VECD model using this failure criterion results in very good agreement between the measured and predicted fatigue life for the eleven mixtures. In addition, a completely independent verification study is conducted for the FHWA ALF mixtures, including both unmodified and modified mixtures. Again, it is found that the simplified VECD model predicts the fatigue life of the ALF mixtures well. It is shown that the simplified VECD model based on the data from a single temperature and a single strain level can predict fatigue test results fairly accurately under various temperature conditions and at various strain levels. It is also shown that the model can be utilized further to simulate both controlled strain and controlled stress direct tension fatigue testing and gain insight into the impact of various mixture design variables, such as asphalt content, binder grade, NMAS, and the inclusion of RAP materials, on the fatigue performance.

AB - Fatigue performance modeling is a major topic in the field of asphalt concrete modeling work. Currently, the only standard fatigue test available for asphalt concrete mixtures is the flexural bending fatigue test, AASHTO T-321. Several issues are associated with flexural fatigue testing, the most important being that the stress state is not uniform but varies with the depth of the specimen, and that the beam specimen fabrication equipment is not widely available. Viscoelastic continuum damage (VECD) fatigue testing is a promising alternative to flexural fatigue testing. Different researchers have successfully applied the VECD model to asphalt concrete mixtures using constant crosshead rate direct tension tests. However, due to the load level limitation of the newly released Asphalt Mixture Performance Tester (AMPT) testing equipment, there is an immediate need to develop a model that can characterize fatigue performance quickly using cyclic test data. In this study, a simplified VECD model, developed at North Carolina State University, is applied to various North Carolina mixtures that are part of the NCDOT project, Local Calibration of the MEPDG for Flexible Pavement Design. A failure criterion that is based on pseudo stiffness is developed from the test data. The application of the VECD model using this failure criterion results in very good agreement between the measured and predicted fatigue life for the eleven mixtures. In addition, a completely independent verification study is conducted for the FHWA ALF mixtures, including both unmodified and modified mixtures. Again, it is found that the simplified VECD model predicts the fatigue life of the ALF mixtures well. It is shown that the simplified VECD model based on the data from a single temperature and a single strain level can predict fatigue test results fairly accurately under various temperature conditions and at various strain levels. It is also shown that the model can be utilized further to simulate both controlled strain and controlled stress direct tension fatigue testing and gain insight into the impact of various mixture design variables, such as asphalt content, binder grade, NMAS, and the inclusion of RAP materials, on the fatigue performance.

KW - Asphalt

KW - Fatigue

KW - Simplified model

KW - Viscoelastic continuum damage

UR - http://www.scopus.com/inward/record.url?scp=79952850910&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79952850910&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:79952850910

VL - 79

SP - 35

EP - 73

BT - Asphalt Paving Technology: Association of Asphalt Paving Technologists-Proceedings of the Technical Sessions

ER -