Probabilistic modeling of fatigue damage in asphalt mixture

Das, Bhaskar Pratim; Das, Saswati; Siddagangaiah, Anjan Kumar

doi:10.1016/j.conbuildmat.2020.121300

Cited by 12 publications

(3 citation statements)

References 27 publications

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“…In the WMA mixture, the allowable loads for fatigue cracking increase with aging, unlike in the HMA mixture, which depends on the WMA additive used as well as the initial STA temperature and time. Bhaskar Pratim Das et al (2020) statistically evaluated fatigue crack resistance according to LTA and STA for HMA and WMA mixtures and reported that the fatigue crack resistance of the WMA mixture was higher than that of HMA after LTA with the cumulative fatigue cracking cycles increasing with aging [26]. In addition, the WMA additive used in this study is a type of wax that does not react chemically owing to heat aging with no change in its physical properties following aging.…”

Section: Fatigue Cracking Resistance Test Results Of Asphalt Mixturesmentioning

confidence: 89%

Effect of Aging and Moisture Damage on Fatigue Cracking Properties in Asphalt Mixtures

2021

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Recently, damage to asphalt pavements in South Korea has increased because of direct and indirect factors caused by abnormal climatic changes, such as torrential rains, prolonged heatwaves in summer, and heavy snowfall in winter. Additionally, the use of medium and heavy vehicles is also a contributing factor. Therefore, an experimental procedure to study the moisture damage and fracture properties of asphalt pavements considering the recent changes in precipitation properties, deterioration of road pavement, and traffic conditions in South Korea was developed in this study. Additionally, changes in material properties according to the indoor aging process and fatigue crack resistance were evaluated for hot mix and warm mix asphalt mixtures of the same grade and different initial production and construction temperatures. To evaluate the effect of aging and moisture damage on fatigue cracking, the experimental coefficient values of the predictive model were calculated for each condition. It was observed that the material properties of hot mix asphalt mixtures changed with an increase in aging and moisture damage. The service life of the pavement was reduced by approximately 40–80% owing to moisture damage, whereas aging had a greater effect on fatigue life as the service life increased.

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Section: Fatigue Cracking Resistance Test Results Of Asphalt Mixturesmentioning

confidence: 89%

Effect of Aging and Moisture Damage on Fatigue Cracking Properties in Asphalt Mixtures

2021

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“…Fatigue refers to a phenomenon caused by the accumulation of unrecoverable strength attenuation of asphalt mixture pavement under repeated loads [ 1 , 2 , 3 ]. In the service process, asphalt pavement is subjected to the repeated action of vehicle load and temperature stress for a long time.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Fatigue Performance of Diatomite/Basalt Fiber Composite Modified Asphalt Mixture

et al. 2022

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The fatigue resistance of asphalt mixture is an important indicator to evaluate the durability of asphalt pavement. In order to improve the fatigue properties of asphalt mixture, diatomite and environmental basalt fiber were added. Four types of asphalt mixtures, ordinary asphalt mixture (AM), diatomite modified asphalt mixture (DAM), basalt fiber modified asphalt mixture (BFAM) and diatomite/basalt fiber composite modified asphalt mixture (DBFAM), were chosen, whose optimum asphalt–aggregate ratio, optimum content of diatomite and optimum content of basalt fiber could be determined by Marshall test and response surface methodology (RSM). The multi-functional pneumatic servo Cooper test machine was carried out by a four-point bending fatigue test. Through the comparative analysis of flexural-tensile stiffness modulus (S), initial stiffness modulus(S0), residual stiffness modulus ratio, lag angle (ϕ) and cumulative dissipation energy (ECD), the fatigue resistance of asphalt mixture can be effectively improved by adding diatomite and basalt fiber. Grey correlation analysis was also used to analyze the degree of correlation between the fatigue life and the influencing factors such as VV, VMA, VFA, OAC, S, and ECD. The analysis results indicate that ECD has the greatest impact on the fatigue life of the asphalt mixture.

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“…Traditional evaluation methods for freeze–thaw damage mainly rely on the degradation of macroscopic mechanical properties, such as freeze–thaw split ratio, split tensile strength, indirect tensile stiffness modulus, fatigue and creep, etc. [ 10 , 21 , 22 , 23 , 24 ]. Some scholars believe that the degree of freeze–thaw damage can be quantified by cracks.…”

Section: Introductionmentioning

confidence: 99%

Effects of Freeze–Thaw Cycles on the Internal Voids Structure of Asphalt Mixtures

Jing

Liu

2022

Materials

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Freeze–thaw cycle is one of the main distresses of asphalt pavement, and the law of freeze–thaw damage has always been an important topic. In this paper, X-ray computed tomography (CT) of asphalt mixture before and after freezing and thawing was carried out, and its two-dimensional (2D) digital image was recognized. Firstly, the eigenvalues of internal voids of asphalt mixture are extracted. Then the distribution of internal voids was analyzed. Finally, the evolution law of internal voids was summarized. The research results show that the characteristic mean value of the 9th cycle is the irreversible limit of freeze–thaw damage, and the non-resilience after the large void area increases is the fundamental reason for the accumulation of freeze–thaw damage. The source of void damage shifts from large voids to small voids, and the middle-stage is a critical stage of freeze–thaw damage. This work quantitatively evaluates the internal freeze–thaw damage process of asphalt mixture, and a morphological theory of the evolution of void damage based on an equivalent ellipse is proposed, which is helpful for better understanding the freezing–thawing damage law of asphalt pavement.

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Probabilistic modeling of fatigue damage in asphalt mixture

Cited by 12 publications

References 27 publications

Effect of Aging and Moisture Damage on Fatigue Cracking Properties in Asphalt Mixtures

Effect of Aging and Moisture Damage on Fatigue Cracking Properties in Asphalt Mixtures

Investigation on Fatigue Performance of Diatomite/Basalt Fiber Composite Modified Asphalt Mixture

Effects of Freeze–Thaw Cycles on the Internal Voids Structure of Asphalt Mixtures

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