Fatigue and Thermal Cracking Analysis of Asphalt Mixtures Using Continuum-Damage and Cohesive-Zone Models

Rahbar-Rastegar, Reyhaneh; Dave, Eshan V.; Daniel, Jo Sias

doi:10.1061/jpeodx.0000066

Cited by 29 publications

(9 citation statements)

References 18 publications

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“…The cohesive zone fracture model in IlliTC uses tensile strength and fracture energy to simulate quasi-brittle and ductile crack propagation. A number of studies have shown that the cohesive zone fracture approach is well suited for simulation of discrete cracking in asphalt mixtures (18,19).…”

Section: Cracking Performance Prediction: Flexpave Tm and Illitcmentioning

confidence: 99%

Impact of Aging on the Viscoelastic Properties and Cracking Behavior of Asphalt Mixtures

Zhang

Sias

Dave

et al. 2019

Transportation Research Record

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Aging can significantly affect the viscoelastic properties and cracking behavior of asphalt mixtures, causing increase in stiffness, reduction in relaxation capability, and increase in brittleness. Eleven mixtures are evaluated using different laboratory conditioning protocols to evaluate how the properties of asphalt mixtures, including viscoelastic properties, fatigue, and fracture behavior will change over time. Comparisons between different aging levels and mixtures are conducted by using complex modulus (E*) (field cores are included), simplified viscoelastic continuum damage (S-VECD) approach, semi-circular bending (SCB), and disk shaped compact tension (DCT) fracture tests. The climatic aging index developed by the NCHRP 09-54 project is utilized in this study to calculate the appropriate field aging duration corresponding to the different laboratory aging protocols. Pavement evaluation tools FlexPAVETM and IlliTC are also used to predict and compare the fatigue and thermal cracking performance of these mixtures. The results of E* and S-VECD tests indicate that the mixtures are more prone to fatigue cracking with aging, and the two long-term conditioning protocols induce statistically similar changes in linear viscoelastic and fatigue properties. However, prediction of fatigue performance from FlexPAVE TM does not show a consistent trend once pavement structure and traffic are considered. Fracture tests and IlliTC predictions show the virgin mixtures and those with soft base binders will have better capability to resist cracking after long-term aging. In this study, the two mixtures with the largest difference between high and low temperature performance grade (PG) show the largest change in fracture and fatigue properties with aging.

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Section: Cracking Performance Prediction: Flexpave Tm and Illitcmentioning

confidence: 99%

Impact of Aging on the Viscoelastic Properties and Cracking Behavior of Asphalt Mixtures

Zhang

Sias

Dave

et al. 2019

Transportation Research Record

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“…As the second step of the analysis, finite element analysis with a cohesive zone fracture model is implemented to analyze the critical events to simulate quasi-brittle and ductile crack propagation (damage) within the pavement. Several research studies have shown that CZM can be utilized as a reliable method to simulate crack propagation in asphalt mixtures (30)(31)(32).…”

Section: Pavement Performance Predictionmentioning

confidence: 99%

Performance Evaluation of Pelletized Solid Polymer Modified Asphalt Mixtures

Mirzaiyanrajeh¹,

DeCarlo

Elshaer

et al. 2022

Transportation Research Record

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The purpose of this research is to provide a comprehensive evaluation of the effects of a solid pelletized plastomeric polymer on asphalt mixtures’ properties and performance with respect to different distresses. Five asphalt mixtures—a control mixture (no polymer); asphalt mixtures with 2.5%, 5.0%, and 7.5% polymer content; and a mixture with 5% polymer and lower asphalt binder content—were evaluated. The laboratory testing campaign included complex modulus, direct tension cyclic fatigue, semi-circular bending, disk-shaped compact tension, and asphalt pavement analyzer tests. Advanced performance-based simulation programs—MnPAVETM, FlexPAVETM, and ILLITC—were utilized to predict mixture performance in the context of pavement structure and local traffic and climatic conditions. In addition, four field test sections were constructed for all but the mixture with the reduced binder content and falling weight deflectometer (FWD) testing was conducted on the test sections. Based on the results of laboratory testing and performance simulation it can be concluded that the study modifier significantly improved the rutting performance and slightly improved the mixture fatigue performance. The study modifier did not show a considerable positive or negative effect on the thermal cracking performance. Based on the FWD results, solid polymer is potentially a good option to increase the stiffness of the asphalt concrete (AC) layer.

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“…A nonlinear thermal shrinkage coefficient provided a much better prediction than the linear approach. In 2018, Rahbar-Rastegar et al [ 25 ] employed three methods to analyze the fatigue and crack resistance performance of nine asphalt mixtures. The results indicated that the integration of simulation models is crucial for establishing a reliable connection between lab-measured properties and the cracking behaviors of the asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cold Wave Diversities on Thermal Stress and Thermal Fatigue Life of Asphalt Mixture

Haimei,

Li,

Guo

et al. 2024

Materials

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Apart from low-temperature cracking, asphalt pavement may also suffer from thermal fatigue cracking. To clarify the impact of cold waves on the thermal fatigue performance of asphalt mixtures, the typical atmospheric temperature characteristics of different regions in China from 2012 to 2019 were analyzed, and the frequency of cold waves in these regions was determined. The viscoelastic parameters of an asphalt mixture are determined through an indirect tensile relaxation test. The thermal stress of the asphalt mixture is simulated and analyzed by using the finite element method. The effect of cold waves on the thermal fatigue life of the asphalt mixture was evaluated. The results show that the frequency of cold waves is different from region to region in China, and the cold waves mainly occurred from October of one year to February of the next year. Northeast China has the most frequency and the largest temperature drop amplitude, followed by North China. The maximum thermal stress increases with the decrease in temperature drop and initial temperature and is unrelated to the duration of cold waves. The thermal stress calculated based on the atmospheric thermal boundary is higher than the value using the road surface temperature. The thermal fatigue lives of asphalt mixtures in North China and Northeast China are very short, while the thermal fatigue life of the mixture in Central China is the longest. To meet the requirement of thermal fatigue damage caused by cold waves during the designed service stage, the recommended threshold for thermal stress is 0.39–0.77 MPa.

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Fatigue and Thermal Cracking Analysis of Asphalt Mixtures Using Continuum-Damage and Cohesive-Zone Models

Cited by 29 publications

References 18 publications

Impact of Aging on the Viscoelastic Properties and Cracking Behavior of Asphalt Mixtures

Impact of Aging on the Viscoelastic Properties and Cracking Behavior of Asphalt Mixtures

Performance Evaluation of Pelletized Solid Polymer Modified Asphalt Mixtures

Influence of Cold Wave Diversities on Thermal Stress and Thermal Fatigue Life of Asphalt Mixture

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