Quantification of biasing effects during fatigue tests on asphalt mixes: non-linearity, self-heating and thixotropy

Mangiafico, Salvatore; Sauzéat, Cédric; Benedetto, Hervé Di; Pouget, Simon; Olard, François; Planque, Luc

doi:10.1080/14680629.2015.1077000

Cited by 57 publications

(33 citation statements)

References 30 publications

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“…University of Lyon/École Nationale des Travaux Publics de l'État (ENTPE) team initiated this approach. 7,17,27,28 It is original and supported by an analysis of experimental data as shown further. A specific protocol called "fatigue tests to estimate biasing effects (FTEBE)" is considered.…”

Section: Introductionmentioning

confidence: 83%

Quantification of different effects occurring during fatigue tests on bituminous mixtures

Phan

Benedetto

Sauzéat

et al. 2017

Fatigue Fract Eng Mat Struct

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Quantification of different effects (nonlinearity, heating, thixotropy, and fatigue) occurring during fatigue tests on bituminous mixtures is presented in this paper. A focus is given on the nonlinearity phenomenon. Continuous fatigue tests and a test with specific protocol (called fatigue tests to estimate biasing effects) were performed in tension/compression mode on cylindrical samples of the same material. The analysis of results reveals that reversible effects (nonlinearity, heating, and thixotropy) are important (more than 90% decrease at 100,000 cycles for a strain amplitude of 100 μm/m at 10 Hz) and cannot be ignored when interpreting classical fatigue tests. The nonlinearity effects respect the time‐temperature superposition principle, and they are more pronounced at “high” temperature (at the same frequency). Direction of nonlinearity curve in the Cole‐Cole axes is shown to be independent of temperature and frequency for the considered range.

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Section: Introductionmentioning

confidence: 83%

Quantification of different effects occurring during fatigue tests on bituminous mixtures

Phan

Benedetto

Sauzéat

et al. 2017

Fatigue Fract Eng Mat Struct

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“…complicating factor of this approach is that damage development during fatigue tests on asphalt is also not fully understood (Mangiafico et al 2015). Consequently, if fatigue damage is taken as a starting point for healing tests, uncertainty is introduced by the unknown damage level.…”

Section: Introductionmentioning

confidence: 99%

The rheological properties and microstructure of Crumb Rubber Modified Asphalt

Ding¹,

Yu²,

Dong³

et al. 2016

Functional Pavement Design

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“…This phenomenon (self-heating) has been demonstrated in several research projects by measuring sample temperature variations under cyclic loads for different material scales, e.g. bituminous binder (Bodin, Soenen and De La Roche, 2004), mastic (Van Rompu, Di Benedetto, Buannic, Gallet and Ruot, 2012;Van Rompu, Di Benedetto, Gauthier and Gallet, 2009) and asphalt concrete (Di Benedetto et al, 2011;Lundström, Ekblad and Isacsson, 2004;Mangiafico et al, 2015). Self-heating may be neglected for in situ loadings due to the available rest periods.…”

Section: Introductionmentioning

confidence: 99%

“…This microstructure results from relatively weak attractive forces between particles; the weakness is sufficient for breaking to occur by mechanical loading (Mewis and Wagner, 2009). Several authors have studied the occurrence of thixotropy in bituminous materials (Di Benedetto et al, 2011;Mangiafico et al, 2015;Mouillet, De La Roche, Chailleux and Coussot, 2012;Nguyen et al, 2012; F.E. Pérez-Jiménez, Botella and Miró, 2012;Félix E. Pérez-Jiménez, Botella, Miró and Martínez, 2015;Shan, Tan, Underwood and Kim, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Two main approaches were adopted when defining the number and length of rest periods, either by including multiple short periods between intermittent loading steps or by introducing a single longer period between two continuous loading phases (Canestrari, Virgili, Graziani and Stimilli, 2015;Mangiafico et al, 2015;F.E. Pérez-Jiménez et al, 2012;Félix E. Pérez-Jiménez et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Modelling self-heating and thixotropy phenomena under the cyclic loading of asphalt

Riahi

Allou

Nieto

et al. 2017

Road Materials and Pavement Design

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Asphalt concrete is a heterogeneous material containing a viscoelastic bituminous matrix and elastic aggregates. When testing asphalt materials under cyclic loading, various phenomena (so-called "biasing effects") can decrease the modulus. This effect has been explained by an increase in the temperature of materials due to energy dissipation (self-heating), thixotropy and damage.The aim of this study is to analyze a uniaxial cyclic tension-compression test performed on bitumen and asphalt mixes, in modeling self-heating as one of the biasing effects.To quantify the self-heating and dissipated energy (as a heat source), a heterogeneous thermomechanical approach is introduced by separating the viscoelastic bituminous matrix from the elastic aggregates. According to this approach, various processes such as energy dissipation in the matrix due to viscoelastic properties, the thermal sensitivity of the matrix as well as its capacity to develop a heat source and diffuse heat through aggregates can all be studied.Local temperature variations are calculated by considering the heterogeneous dissipated energy field as a heat source. The complex modulus variation can then be calculated by taking into account both the temperature field and thermal sensitivity of the material. Simulation results show that as opposed to bitumen, in which 100% of complex modulus variations observed during a strain sweep test are due to self-heating, the results on asphalt mixes indicate that thixotropy varies with mechanical properties to a greater extent than self-heating. This fact is probably correlated with: a higher strain level in thin bituminous matrix films, a higher load velocity in thin matrix films, material heterogeneity, and the 3D characteristic of matrix loading during the tension-compression test on asphalt mixes.

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Quantification of biasing effects during fatigue tests on asphalt mixes: non-linearity, self-heating and thixotropy

Cited by 57 publications

References 30 publications

Quantification of different effects occurring during fatigue tests on bituminous mixtures

Quantification of different effects occurring during fatigue tests on bituminous mixtures

The rheological properties and microstructure of Crumb Rubber Modified Asphalt

Modelling self-heating and thixotropy phenomena under the cyclic loading of asphalt

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