Prediction of Asphalt Concrete Low-temperature Cracking Resistance on the Basis of Different Constitutive Models

Gajewski, Marcin; Langlois, Pierre-Alain

doi:10.1016/j.proeng.2014.12.016

Cited by 12 publications

(2 citation statements)

References 5 publications

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“…In order to consider the temperature field transmission process from outside to the central section of the model, the coefficients of thermal contraction at different temperatures are provided in Table 6. The values of the thermal properties of asphalt mixture were acquired from previous works in the literature [51]. The thermal conductivity and the specific heat of the asphalt mixture used in this study were 0.74 W/(m• • C) and 880 J/(kg• • C), respectively.…”

Section: Materials Characterizationmentioning

confidence: 99%

Effects of Geometry and Loading Mode on the Stress State in Asphalt Mixture Cracking Tests

Li¹,

Xuan

Rahman

et al. 2022

Materials

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Currently, a variety of asphalt mixture cracking characterization tests are available as screening tools for the better selection of high-quality raw materials and also for the optimization of mixture design for different applications. However, for a same evaluation index, using different sample geometries and loading modes might lead to obtaining different values, which prevents the application of the evaluation index as a fundamental parameter in pavement design. In this paper, the effects of geometry and loading mode on the stress state in the experimental characterization of asphalt mixture cracking were discussed using numerical simulation. The results showed that applying thermally-induced load in restrained uniaxial test configuration should be considered when performing an asphalt mixture cracking test. Compared with direct tensile configuration, compressive stress clearly existed in other common test configurations, which may prevent the initiation and propagation of cracks. Moreover, it was revealed that nonuniform stress state exists in the dog-bone geometry, which makes it possible to know the failure plane in advance and place gauges at the failure plane for measuring fundamental deformation-related properties.

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Section: Materials Characterizationmentioning

confidence: 99%

Effects of Geometry and Loading Mode on the Stress State in Asphalt Mixture Cracking Tests

Li¹,

Xuan

Rahman

et al. 2022

Materials

View full text Add to dashboard Cite

show abstract

“…In the research of Qian et al [35], thermal viscoelasticity theory was applied to simulate the Thermal Stress Restrained Specimen Test (TSRST). Gajewski and Langlois [36] modeled the TSRST results using the finite element method in a frame of thermo-mechanics with a "weak coupling" between thermal and mechanical effects. As an alternative to the TSRST method, the Asphalt Concrete Cracking Device (ACCD) was developed by Akentuna et al to study thermal stress development in asphalt mixtures [37].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Thermal Stresses in Asphalt Mixtures at Low Temperatures Using the Tensile Creep Test and the Bending Beam Creep Test

2019

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Thermal stresses are leading factors that influence low-temperature cracking behavior of asphalt pavements. During winter, when the temperature drops to significantly low values, tensile thermal stresses develop as a result of pavement contraction. Creep test methods can be suitable for the assessment of low-temperature properties of asphalt mixtures. To evaluate the influence of creep test methods on the obtained low-temperature properties of asphalt mixtures, three point bending and uniaxial tensile creep tests were applied and the master curves of stiffness modulus were analyzed. On the basis of creep test results, rheological parameters describing elastic and viscous properties of the asphalt mixtures were determined. Thermal stresses were calculated and compared to the tensile strength of the material to obtain the failure temperature of the analyzed asphalt mixtures. It was noted that lower strain values of creep curves were obtained for the Tensile Creep Test (TCT) than for the Bending Beam Creep Test (BBCT), especially at lower temperatures. Results of thermal stress calculations indicated that higher reliability was obtained for the viscoelastic Monismith method based on the TCT results than for the simple quasi-elastic solution of Hills and Brien. The highest agreement with the TSRST results was also obtained for the Monismith method based on the TCT results. No clear relationships were noted between the predicted failure temperature and different methods of thermal stress calculations.

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Determination of Thermal Stresses in Asphalt Layers as a Problem of Thermo-elasticity and Unsteady Heat Flow

2021

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Prediction of Asphalt Concrete Low-temperature Cracking Resistance on the Basis of Different Constitutive Models

Cited by 12 publications

References 5 publications

Effects of Geometry and Loading Mode on the Stress State in Asphalt Mixture Cracking Tests

Effects of Geometry and Loading Mode on the Stress State in Asphalt Mixture Cracking Tests

Assessment of Thermal Stresses in Asphalt Mixtures at Low Temperatures Using the Tensile Creep Test and the Bending Beam Creep Test

Determination of Thermal Stresses in Asphalt Layers as a Problem of Thermo-elasticity and Unsteady Heat Flow

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