From the Behavior of Constituent Materials to the Calculation and Design of Orthotropic Bridge Structures

Pouget, Simon; Sauzéat, Cédric; Benedetto, Hervé Di; Olard, François

doi:10.1080/14680629.2010.9690329

Cited by 72 publications

(23 citation statements)

References 11 publications

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“…In pavement design, Poisson's ratio of hot mix asphalt (HMA) is often assumed to be constant though several experimental studies have shown its time (frequency) and temperature dependence [1][2][3][4][5][6][7][8][9][10][11][12][13]. Sensitivity analyses were conducted by Maher and Bennert [14] and by Schwartz et al [15], using the MEPDG software to evaluate how change in the Poisson's ratio of the HMA layers affect distress predictions in a typical pavement structure.…”

Section: Introductionmentioning

confidence: 99%

3Dim experimental investigation of linear viscoelastic properties of bituminous mixtures

et al. 2016

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As part of RILEM TC 237-SIB, TG3 performed a Round Robin Test to evaluate the capacity to measure Poisson's ratio of an asphalt mixture in the laboratory and to check whether it could be considered as an isotropic property. Five laboratories located in five different countries took part in the testing program. This paper presents the different techniques used by the laboratories, reports the measured Poisson's ratios and comments upon the differences found between the results. Sinusoidal or haversine loading either in tension-compression or pure compression was applied to the specimens over a range of frequencies and temperatures. During the loading both the axial and radial strains were monitored to allow the complex Young's modulus and the complex Poisson's ratios to be calculated. It was found that the complex Young's modulus and the complex Poisson's ratios were very close in the Black Diagrams, but diverge sharply in the Cole-Cole plots. It was observed that the maximum difference between the complex Poisson's ratio in direction 2 and direction 3 is less than 0.05. It would appear that this difference is more related to measurement deviation than anisotropy of the material. Some differences were observed in the master curves of complex Young's modulus and complex Poisson's ratio obtained from the five laboratories; however these differences could in most cases be explained by temperature differences. It was concluded that within the linear viscoelastic range (small strains) the results from the different laboratories show similar rheological behavior and the material response follows the same trend.

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Section: Introductionmentioning

confidence: 99%

3Dim experimental investigation of linear viscoelastic properties of bituminous mixtures

et al. 2016

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“…As was proved in the literature [18], the mixes' stiffness is linked to that of the binder. Therefore, the influence of additives could be highlighted well by measuring the complex modulus of the binders.…”

Section: Mixes' Complex Modulimentioning

confidence: 83%

Effect of vegetable oil additives on binder and mix properties: laboratory and field investigation

Somé¹,

Gaudefroy²,

Delaunay

2015

Mater Struct

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The effects of vegetable fluxes on the rheological properties of binders and foamed warm mix asphalt (WMA) have been studied. The fluxes consist of two organic additives: a methyl ester of fatty acid from sunflower and a resin fluxed with monoalkyl esters. Commercially, they are named Oleoflux and Green Seal, respectively. Three additives' contents (0, 0.5 and 5 %) have been investigated. The surface tension, infrared spectra, viscosity, penetration and softening temperature of the binders have first been first measured. The linear viscoelastic properties of the mixes and binders have been studied through the complex modulus and modeled by the improved Huet-Sayegh model. The viscosity and complex modulus of the fluxed binders show that the increase of the additive content rejuvenates the base bitumen. The model parameters show that the relaxation times vary inversely with the additives' contents. Moreover, after 8 months of aging at room conditions, it was found that the fluxed binders are more sensitive to aging than nonfluxed binders. In conjunction with the binders' property characterization, the complex modulus and stripping resistance of the mixes have been studied. The mixes' complex modulus results are consistent with those of the binder. Thanks to an ingenious road built with WMA and HMA, the field performances at the early age when the road was built and 5 years later have been compared, although 5 years is not enough to draw definitive conclusions. No significant difference is found between WMA and HMA skid resistances and complex moduli. A slight decrease is found in the stripping resistance of WMA compared to those of HMA. A decrease in the skid resistance is observed 5 years later because of the polishing of the aggregates on the road surface due to traffic.

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“…This last hypothesis, made to simplify the analysis, could be improved if three-dimensional expression of 2S2P1D is considered (Di Benedetto, Delaporte et al, 2007;Tiouajni, Di Benedetto, Sauzéat, & Pouget, 2011). The 2S2P1D model fitting was presented in several papers from the ENTPE team, for different types of bituminous materials (Baaj, Ech, Tapsoba, Sauzéat, & Di Benedetto, 2013;Delaporte, Di Benedetto, Chaverot, & Gauthier, 2009;Di Benedetto, Sauzéat, & Sohm, 2009;Mangiafico et al, 2013Mangiafico et al, , 2014Mounier, Di Benedetto, & Sauzéat, 2012;Pouget, Sauzéat, Di Benedetto, & Olard, 2010a, 2010ab, 2012Tapsoba, Sauzéat, Di Benedetto, Baaj, & Ech, 2014). The number of analysed cycles should be correctly chosen to avoid biased effects, such as heating and thixotropy as shown elsewhere (Di Benedetto, Nguyen, & Sauzéat, 2011;Nguyen, Di Benedetto, & Sauzéat, 2012).…”

Section: Methodology Used In This Papermentioning

confidence: 99%

Comparison of rheological parameters of asphalt binders obtained from bending beam rheometer and dynamic shear rheometer at low temperatures

Carret

Falchetto

Marasteanu

et al. 2015

Road Materials and Pavement Design

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In this paper, an investigation was performed to determine if the complex modulus obtained from frequency sweeps performed with the dynamic shear rheometer (DSR) can be used to accurately predict the creep compliance obtained experimentally using the bending beam rheometer (BBR). Two sets of asphalt binders were tested at low, intermediate, and high temperatures and the results were analysed using 2S2P1D and DBN rheological models. DSR and BBR testing was performed in two different laboratories using different equipment manufacturers. It was found that significant differences are observed between the creep stiffness obtained with DSR and BBR devices, most likely due to the different preparation and conditioning of the test specimens in different cooling media.

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From the Behavior of Constituent Materials to the Calculation and Design of Orthotropic Bridge Structures

Cited by 72 publications

References 11 publications

3Dim experimental investigation of linear viscoelastic properties of bituminous mixtures

3Dim experimental investigation of linear viscoelastic properties of bituminous mixtures

Effect of vegetable oil additives on binder and mix properties: laboratory and field investigation

Comparison of rheological parameters of asphalt binders obtained from bending beam rheometer and dynamic shear rheometer at low temperatures

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