Damage Theory Applied to Flexural Fatigue Tests on Conventional and Asphalt Rubber Hot Mixes

Luiz G.R. Mello; Kamil E. Kaloush; Márcio M. Farias

doi:10.1080/14680629.2010.9690299

Damage Theory Applied to Flexural Fatigue Tests on Conventional and Asphalt Rubber Hot Mixes

Luiz G.R. Mello, Kamil E. Kaloush, Márcio M. Farias

Sustainable Engineering and the Built Environment, School of (SEBE)

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Application of the Continuum Damage Theory (CDT) to evaluate the evolution of internal damage in Hot Mix Asphalt (HMA) is investigated in this paper. The CDT leads to the formulation of a characteristic curve relating normalized pseudo-stiffness and the internal damage variable, and this curve is supposed to be unique for each material. The uniqueness of the characteristic curve was investigated in this paper by performing fatigue tests in which prismatic samples of HMA were subjected to cyclic bending loads under strain controlled tests. Asphalt mixtures with dense, open and gap gradation using conventional and rubber modified binders were tested. The results of all the tests showed the existence of unique curves independent of loading mode, amplitude or frequency within the studied range. This property may be implemented in numerical codes to simulate the behavior of flexible pavements under a variety of field conditions, using a well formulated mechanistic approach.

Original language	English (US)
Pages (from-to)	681-700
Number of pages	20
Journal	Road Materials and Pavement Design
Volume	11
Issue number	3
DOIs	https://doi.org/10.1080/14680629.2010.9690299
State	Published - Jan 1 2010

Keywords

Asphalt Rubber
Damage
Fatigue

ASJC Scopus subject areas

Civil and Structural Engineering

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title = "Damage Theory Applied to Flexural Fatigue Tests on Conventional and Asphalt Rubber Hot Mixes",

abstract = "Application of the Continuum Damage Theory (CDT) to evaluate the evolution of internal damage in Hot Mix Asphalt (HMA) is investigated in this paper. The CDT leads to the formulation of a characteristic curve relating normalized pseudo-stiffness and the internal damage variable, and this curve is supposed to be unique for each material. The uniqueness of the characteristic curve was investigated in this paper by performing fatigue tests in which prismatic samples of HMA were subjected to cyclic bending loads under strain controlled tests. Asphalt mixtures with dense, open and gap gradation using conventional and rubber modified binders were tested. The results of all the tests showed the existence of unique curves independent of loading mode, amplitude or frequency within the studied range. This property may be implemented in numerical codes to simulate the behavior of flexible pavements under a variety of field conditions, using a well formulated mechanistic approach.",

keywords = "Asphalt Rubber, Damage, Fatigue",

author = "Mello, {Luiz G.R.} and Kaloush, {Kamil E.} and Farias, {M{\'a}rcio M.}",

note = "Funding Information: Tayebali A.A., Deacon J.A., Coplantz J.S., Harvey J.T., Monismith C.L., “Fatigue Response of Asphalt-Aggregate Mixes. Part I – Test Method Selection”, Strategic Highway Research Program – SHRP-A-404, National research Council, 1994a. Funding Information: The authors acknowledge the financial support of the Brazilian sponsoring agencies, CAPES and CNPq, the Arizona Department of Transportation (ADOT), and Arizona State University (ASU).",

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doi = "10.1080/14680629.2010.9690299",

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N1 - Funding Information: Tayebali A.A., Deacon J.A., Coplantz J.S., Harvey J.T., Monismith C.L., “Fatigue Response of Asphalt-Aggregate Mixes. Part I – Test Method Selection”, Strategic Highway Research Program – SHRP-A-404, National research Council, 1994a. Funding Information: The authors acknowledge the financial support of the Brazilian sponsoring agencies, CAPES and CNPq, the Arizona Department of Transportation (ADOT), and Arizona State University (ASU).

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N2 - Application of the Continuum Damage Theory (CDT) to evaluate the evolution of internal damage in Hot Mix Asphalt (HMA) is investigated in this paper. The CDT leads to the formulation of a characteristic curve relating normalized pseudo-stiffness and the internal damage variable, and this curve is supposed to be unique for each material. The uniqueness of the characteristic curve was investigated in this paper by performing fatigue tests in which prismatic samples of HMA were subjected to cyclic bending loads under strain controlled tests. Asphalt mixtures with dense, open and gap gradation using conventional and rubber modified binders were tested. The results of all the tests showed the existence of unique curves independent of loading mode, amplitude or frequency within the studied range. This property may be implemented in numerical codes to simulate the behavior of flexible pavements under a variety of field conditions, using a well formulated mechanistic approach.

AB - Application of the Continuum Damage Theory (CDT) to evaluate the evolution of internal damage in Hot Mix Asphalt (HMA) is investigated in this paper. The CDT leads to the formulation of a characteristic curve relating normalized pseudo-stiffness and the internal damage variable, and this curve is supposed to be unique for each material. The uniqueness of the characteristic curve was investigated in this paper by performing fatigue tests in which prismatic samples of HMA were subjected to cyclic bending loads under strain controlled tests. Asphalt mixtures with dense, open and gap gradation using conventional and rubber modified binders were tested. The results of all the tests showed the existence of unique curves independent of loading mode, amplitude or frequency within the studied range. This property may be implemented in numerical codes to simulate the behavior of flexible pavements under a variety of field conditions, using a well formulated mechanistic approach.

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Damage Theory Applied to Flexural Fatigue Tests on Conventional and Asphalt Rubber Hot Mixes

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Keywords

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