01475424

Component

https://doi.org/10.3141/2373-03

http://scholar.google.com...ttle&publication_year=2013

Rutting (permanent deformation) is the most important distress that asphalt concrete pavements are prone to at high temperatures. However, available classical viscoplastic (VP) theories are incapable of properly predicting permanent deformation of asphalt concrete materials at high temperatures subjected to cyclic loading conditions. A physically based VP hardening relaxation model is proposed to overcome this issue. This model considers the changes in the microstructure that occur during the rest period and cause the induced hardening stress to relax and recover. This mechanism affects the VP properties of asphalt concrete before and after the rest period is applied. A memory surface is introduced as the general criterion for the evolution of the hardening relaxation mechanism. The memory surface possesses a state variable memorizing the history of the VP deformation during the loading history. The proposed VP hardening relaxation model is coupled with Schapery’s viscoelastic model and the classical Perzyna’s VP model and is validated against extensive experimental data, including repeated creep and recovery tests at different stress levels, loading times, and rest periods. It is shown that the proposed model reasonably predicts the cyclic VP response of asphalt concrete materials at high temperatures.

01517321

13-1839

English

pp 22–33

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309287081

Print

Figures (8) ; References (22) ; Tables (1)

Asphalt concrete pavements; Deformation; Mechanical relaxation; Microstructure; Pavement distress; Rutting; Temperature; Viscoplasticity

Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB, ATRI

Feb 5 2013 12:26PM

• Approach for Quantifying the Effect of Binder Oxidative Aging on the Viscoelastic Properties of Asphalt Mixtures
• Comparison of Uniaxial and Four-Point Bending Fatigue Tests for Asphalt Mixtures
• Constitutive Modeling of Fatigue Damage Response of Asphalt Concrete Materials
• Development of Calibration Testing Protocol for Permanent Deformation Model of Asphalt Concrete (With Discussion and Closure)
• Laboratory Hot-Mix Asphalt Cracking Testing: Evaluation of Three Repeated Loading Crack Tests
• Laboratory Validation of Healing-Based Fatigue Endurance Limit for Hot-Mix Asphalt
• Local Practice of Assessing Dynamic Modulus Properties for Washington State Mixtures
• Mechanistic-Based Approach to Evaluate Rutting Susceptibility of Hot-Mix Asphalt Mixtures by Use of Dynamic Triaxial Testing
• Modeling Water Vapor Diffusion in Pavement and Its Influence on Fatigue Crack Growth of Fine Aggregate Mixture
• Modified Paris’s Law to Predict Entire Crack Growth in Asphalt Mixtures
• Nonlinear Viscoelastic Behavior of Asphalt Concrete and Its Implication for Fatigue Modeling
• Permanent Deformation Characterization of Asphalt Mixtures by Using Incremental Repeated Load Testing
• Three-Dimensional Microstructural Modeling of Asphalt Concrete by Use of X-Ray Computed Tomography