01124259

Component

https://doi.org/10.3141/2127-11

http://scholar.google.com...ngre&publication_year=2009

Fatigue cracking is one of the major distresses in asphalt pavements. Accurate prediction of fatigue life of asphalt pavements can be extremely important both during the design stage and for prediction of remaining service life of in-service pavements. Traditional fatigue life predictions based on bending beam tests can be costly and time-consuming. The uniaxial push–pull (tension–compression) tests run on cylindrical samples have been a novel alternative. However, the traditional sample size for the push–pull tests may prevent its use for thin in-service pavements. This paper presents the results of a study investigating the possibility of using smaller sample sizes for push–pull tests. The viscoelastic continuum damage (VECD) characteristics of regular and small-size samples are compared, and the difference is observed to be negligible. In addition, a practical fatigue life formulation is derived on the basis of VECD theory. Uniqueness of the derived fatigue life (N sub f) equation, differing from previously derived VECD-based N sub f equations, stems from the fact that it does not force a certain form of equation to fit the damage characteristic curve. Finally, the differences in fatigue lives of different layers of the field sections at FHWA’s accelerated loading facility are investigated.

01147872

09-2539

English

pp 90-97

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309142687

Print

Figures (6) ; Photos (4) ; References (16) ; Tables (3)

Asphalt mixtures; Asphalt pavements; Fatigue cracking; Fatigue tests; Service life

Accelerated loading facilities; Bending beam tests; Pull-push testing; Sample size; Uniaxial compression; Uniaxial tension; Viscoelastic continuum damage model

Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Jan 30 2009 6:53PM

• Application of Artificial Neural Networks for Estimating Dynamic Modulus of Asphalt Concrete
• Application of Generalized J-Integral to Crack Propagation Modeling of Asphalt Concrete Under Repeated Loading
• Comparison of Low-Temperature Field Performance and Laboratory Testing of 10 Test Sections in the Midwestern United States
• Determining Representative Volume Elements of Asphalt Concrete Mixtures Without Damage
• Effective Temperature for Analysis of Permanent Deformation and Fatigue Distress on Asphalt Mixtures
• Evaluation and Application of Long-Lasting Asphalt Mixture
• Evaluation of Aspects of E* Test Using Hot-Mix Asphalt Specimens with Varying Void Contents
• Evaluation of Embedded Discontinuity Method for Finite Element Analysis of Cracking of Hot-Mix Asphalt Concrete
• Evaluation of Fatigue Models of Hot-Mix Asphalt Through Laboratory Testing
• Field and Laboratory Evaluation of Fracture Resistance of Illinois Hot-Mix Asphalt Overlay Mixtures
• Forensic Investigation and Validation of Energy Ratio Concept
• Identification of Parameters Related to Moisture Conditioning That Cause Variability in Modified Lottman Test
• Interface Bonding Between Hot-Mix Asphalt and Various Portland Cement Concrete Surfaces: Assessment of Accelerated Pavement Testing and Measurement of Interface Strain
• Long-Term Monitoring of Noise and Frictional Properties of Three Pavements: Dense-Graded Asphalt, Stone Matrix Asphalt, and Porous Friction Course
• Low Design Temperatures of Asphalt Pavements in Dry–Freeze Regions: Predicting by Means of Solar Radiation, Transient Heat Transfer, and Finite Element Method
• Micromechanical Modeling of Hot-Mix Asphalt Mixtures by Imaging and Discrete Element Methods
• Precision of AASHTO TP62-07 for Use in Mechanistic-Empirical Pavement Design Guide for Flexible Pavements
• Refinement of Flow Number as Determined by Asphalt Mixture Performance Tester: Use in Routine Quality Control–Quality Assurance Practice
• Using Dynamic Modulus Test to Evaluate Moisture Susceptibility of Asphalt Mixtures