Characterization of Permanent Deformation of Asphalt Mixtures Based on Shear Properties

Li, Qiang; Lee, Hyun Jong; Hwang, Eui Yoon

doi:10.3141/2181-01

Cited by 16 publications

(10 citation statements)

References 7 publications

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“…In the previous study, RLPD test results revealed an excellent exponential correlation between τ/τ f and permanent strain ⑀ p under certain load repetitions (10). From laboratory test data, a permanent deformation model based on τ/τ f was proposed:…”

Section: Review Of Previous Modelmentioning

confidence: 98%

“…The authors previously proposed a permanent deformation model based on a ratio of shear stress to strength (10). The shear strength of a material is principally developed from two sources: cohesion c (kPa) and friction angle φ (°) (1): where τ f is shear strength at failure and σ f is normal stress at failure.…”

Section: Review Of Previous Modelmentioning

confidence: 99%

“…Three types of asphalt mixtures were produced in the laboratory, the same mixtures as those used previously (10). A Superpave ® gyratory compactor (SGC) was used to fabricate cylindrical specimens.…”

Section: Materials and Specimen Preparationmentioning

confidence: 99%

“…Three confining pressures (0, 69, and 138 kPa) were used to calculate c and φ with Mohr-Coulomb failure theory. More detailed information about the TCS test method can be found elsewhere (10).…”

Section: Tcs Testmentioning

confidence: 99%

“…A permanent deformation model of asphalt mixtures was established on the basis of the ratio of shear stress to strength in the authors' previous research (10). A triaxial compressive strength (TCS) test and the RLPD test were conducted on three types of asphalt mixtures with various volumetric properties at a single load level and temperature to correlate shear properties with rutting performance.…”

mentioning

confidence: 99%

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Permanent Deformation Model Based on Shear Properties of Asphalt Mixtures

Lee

2011

Transportation Research Record

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A permanent deformation model of asphalt concrete based on shear properties is developed and calibrated. This model is extended and improved from previous work with the use of laboratory test results. Triaxial compressive strength and repeated-load permanent deformation (RLPD) tests on three types of asphalt mixtures are performed at various loads and temperatures to correlate the shear properties of asphalt mixtures with rutting performance. Test results indicate that the cohesion and friction angle of a given asphalt mixture decrease with increased temperature. Also, the results of RLPD tests indicate that loading and environmental conditions such as deviatoric stress, confining pressure, test temperature, and load frequency significantly affect the permanent deformation of asphalt mixtures and must be incorporated into the prediction model. Three versions of the permanent deformation model based on different input levels are proposed and verified by the test data. Then, the model is calibrated by an accelerated pavement testing data set conducted on a typical pavement structure at various temperatures. The proposed model can successfully predict the permanent deformation of various asphalt mixtures under a wide range of loading and temperature conditions without changing model coefficients.

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Section: Review Of Previous Modelmentioning

confidence: 98%

Section: Review Of Previous Modelmentioning

confidence: 99%

Section: Materials and Specimen Preparationmentioning

confidence: 99%

Section: Tcs Testmentioning

confidence: 99%

mentioning

confidence: 99%

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Permanent Deformation Model Based on Shear Properties of Asphalt Mixtures

Lee

2011

Transportation Research Record

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On the Role of Loading Configurations in Creep Curve Accumulation: An Statistical Analysis by Applying Weibull Probability Distribution Function

Motevalizadeh

2021

Int. J. Pavement Res. Technol.

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Flow number (FN) reflects the resistance of asphalt mixtures against rutting failure by assessing the results of repeated loading permit deformation (RLPD) testing, affecting the different loading regimes. Accordingly, this work was conducted to investigate the impact of loading variables, i.e., loading duration, rest ratio, and loading pulse waveform, in addition to the testing temperature on the permanent deformation accumulation. Square and Haversine waveforms were chosen as the loading waves. Besides, three levels of loading duration (100, 500, and 1000 ms), two levels of rest ratios (1 and 3), and two testing temperatures (40 and 55 °C) were considered in the definition of loading regimes. The Francken model was fitted over the experimental data aim to determine the FN points. Weibull distribution analysis was also applied to distinguish between the different levels of testing variables. The results indicated that testing temperature was the most significant variable in permanent deformation accumulation, and loading duration was the most effective in defining loading regimes. Increasing loading duration and rest ratios resulted in an increased rate of permanent deformation accumulation and lower FN values. The specimens exposed to the square waveform were reached the FN sooner than those exposed to haversine.

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Evaluating the rutting resistance of asphalt mixtures using an advanced repeated load permanent deformation test under field conditions

Gao

et al. 2014

Construction and Building Materials

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Characterization of Permanent Deformation of Asphalt Mixtures Based on Shear Properties

Cited by 16 publications

References 7 publications

Permanent Deformation Model Based on Shear Properties of Asphalt Mixtures

Permanent Deformation Model Based on Shear Properties of Asphalt Mixtures

On the Role of Loading Configurations in Creep Curve Accumulation: An Statistical Analysis by Applying Weibull Probability Distribution Function

Evaluating the rutting resistance of asphalt mixtures using an advanced repeated load permanent deformation test under field conditions

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