Pavement Design for Curved Road Sections Fatigue Performance of Interfaces and Longitudinal Top-down Cracking in Multilayered Pavements

Petit, Christophe; Diakhaté, Malick; Millien, Anne; Phelipot-Mardelé, Annabelle; Pouteau, Bertrand

doi:10.3166/rmpd.10.609-624

Cited by 9 publications

(6 citation statements)

References 8 publications

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“…As far as the testing temperature is concerned, the FG interface at 10 • C provides higher shear fatigue performance compared to those at 20 • C for the same reinforcement (Figure 16). This is in accordance with previous investigations carried out with various shear tests in cyclic modality on unreinforced specimens [34,39,61] and in static modality on reinforced specimens [45], where an improvement of interlayer resistance was measured at low temperatures. Therefore, it can be assumed that as the temperature decreases, since the asphalt concrete is a thermo-dependent material, the interlayer becomes stiffer and more loading cycles of the same stress intensity are needed to cause the failure of the specimen.…”

Section: Interlayer Shear Fatigue Curvesupporting

confidence: 93%

“…Nevertheless, road pavements are subjected to cyclic traffic loads with magnitudes considerably lower than those that cause the interface failure during static shear tests. In this sense, static (i.e., monotonic) shear tests can be used for quality assessment of the interlayer bonding properties at failure, whereas the adoption of cyclic shear tests can offer a more complex evaluation of interlayer bonding [34][35][36][37]. Moreover, cyclic shear test results can be used for modeling or pavement design purposes.…”

Section: Introductionmentioning

confidence: 99%

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Shear-Torque Fatigue Performance of Geogrid-Reinforced Asphalt Interlayers

et al. 2020

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Interlayer reinforcement systems represent a valid solution to improve performance and extend the service life of asphalt pavements, reducing maintenance costs. The main issue is that the presence of reinforcement may hinder the full transmission of stresses between asphalt layers, reducing the overall pavement bearing capacity. This study aimed at evaluating the mechanical behavior of geogrid-reinforced asphalt interlayers under cyclic shear loading. To this purpose, a trial section, characterized by three types of interface (reinforced with carbon fiber grid, reinforced with glass fiber grid and unreinforced), was built. Cores were taken from the trial section to carry out shear-torque fatigue tests. Static Leutner shear tests were also performed on cored specimens having the same interface configuration. From data gathered in the present study, shear-torque fatigue tests have proved to be a powerful tool for investigating reinforced specimens. Results clearly ranked the investigated materials, showing that the glass fiber grid has the lowest shear fatigue performance in comparison with the other two interfaces at 20 °C. However, the shear fatigue resistance of glass fiber grid increases significantly at 10 °C. Finally, an interesting correlation was found between cyclic and static shear test results that should be better investigated in future studies.

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Section: Interlayer Shear Fatigue Curvesupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Shear-Torque Fatigue Performance of Geogrid-Reinforced Asphalt Interlayers

et al. 2020

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“…The interface fatigue model is expressed on the basis of the model currently used to determine the lifetime of asphalt concrete mixtures. A recently published paper has focused on use of the interface fatigue model to improve the design of curved road sections [20]. Table captions Table 1.…”

Section: Resultsmentioning

confidence: 99%

Experimental investigation of tack coat fatigue performance: Towards an improved lifetime assessment of pavement structure interfaces

Diakhaté

Millien

Petit

et al. 2011

Construction and Building Materials

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International audienceThis paper focuses on investigating the bonding fatigue performance between two asphalt concrete (AC) layers. For purposes of this experimental campaign, a customised double shear testing device was designed. Two interface conditions have been analysed herein: with and without a tack coat. Moreover, the corresponding fatigue behaviour has been analysed at two temperatures: 10 °C and 20 °C. As expected, the absence of a tack coat leads to a decrease in bonding fatigue performance. Since fatigue tests are highly time-consuming, a method that allows predicting the conventional interface fatigue law from accelerated shear fatigue tests has been proposed. Other novel findings on interface fatigue behaviourwill also be discussed. In addition to these fatigue results, an interface failure model is proposed to evaluate the interface lifetime. Incorporating interface fatigue performance into pavement analysis proves to be a key parameter in describing in situ pavement conditions and assessing pavement durability

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“…The works of Yoo [ 8 ] have shown that vertical shear strain at the edge of the tire is more critical than extensional strain. Petit [ 9 ] has shown that the TDC fatigue of a pavement structure is initiated by superficial extension strains that are induced by tangential stresses applied to the surface of the roadway. A crack initiation model was developed by Lytton [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Approach of Pavement Surface Layer Degradation Caused by Tire Contact Using Semi-Analytical Model

et al. 2021

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New methods of degradations on the pavement’s surface, such as top-down cracking and delamination, caused by the repeated passage of heavy vehicles led to questions about the impact of the contact between the tire and the pavement. In fact, to increase the service life of the structures, future road design methods must have a precise knowledge of the consequences of the contact parameters on the state of stress and deformation in the pavement. In this paper, tractive rolling contact under the effect of friction is modeled by Kalker’s theory using a semi-analytical method (SAM). A tire profile is performed thanks to a digitization by fringes or a photogrammetry technique. The effect of rolling on the main surface extension deformations is then highlighted to study top cracking. At the end of the SAM calculation, contact areas are closed to 200 μdef, exceeding the allowable micro-deformation limit for the initiation of cracking. In addition, results on the main strain directions also give information on the direction of cracking (initiation of longitudinal or transverse cracks). The cracking then becomes evident, leading to a reduced service life.

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Pavement Design for Curved Road Sections Fatigue Performance of Interfaces and Longitudinal Top-down Cracking in Multilayered Pavements

Cited by 9 publications

References 8 publications

Shear-Torque Fatigue Performance of Geogrid-Reinforced Asphalt Interlayers

Shear-Torque Fatigue Performance of Geogrid-Reinforced Asphalt Interlayers

Experimental investigation of tack coat fatigue performance: Towards an improved lifetime assessment of pavement structure interfaces

Approach of Pavement Surface Layer Degradation Caused by Tire Contact Using Semi-Analytical Model

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