A dissipated energy comparison to evaluate fatigue resistance using 2-point bending

Maggiore, Cinzia; Airey, Gordon; Marsac, Paul

doi:10.1016/s2095-7564(15)30088-x

Cited by 18 publications

(21 citation statements)

References 2 publications

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“…It can be concluded that the incorporation of additives increases the cumulative dissipated energy which increases the fatigue life of the asphalt concrete mixture from the dissipated energy point of view by (233 and 100) % for mixtures treated with fly ash and silica fumes respectively. Test results agree with Maggiore et al, (2014).…”

Section: Figure 2 Influence Of Additives On Dissipated Energysupporting

confidence: 74%

Influence of Additives on the Viscoelastic Behavior of Asphalt Concrete

Sarsam¹

2022

bioex

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Implication of mineral additives into the asphalt concrete mixture can influence the viscoelastic behavior; change the density, gradation, and strength properties. In the present investigation, fly ash and silica fumes were added to the asphalt concrete mixture. Slab samples were compacted with the aid of laboratory roller, and then beam specimens were sawed from the slab samples. The asphalt concrete beam specimens were subjected to repeated flexural stresses through the four-points bending test at 20℃ and under 400 micro-strain level until failure. The influence of the additives was monitored and compared. It was concluded that the phase angle, flexural stiffness, and the fatigue life declines while the cumulative dissipated energy increases after implication of the additives. However, the silica fumes additives exhibit a significant impact on the viscoelastic properties as compared with the control or the fly ash treated mixtures.

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Section: Figure 2 Influence Of Additives On Dissipated Energysupporting

confidence: 74%

Influence of Additives on the Viscoelastic Behavior of Asphalt Concrete

Sarsam¹

2022

bioex

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“…For an elastic material, the energy is stored in the system when the load is applied. Maggiore et al, (2014) reported that all the energy is recovered when the load is removed; in this case the loading and the unloading curves coincide. However, viscoelastic materials are known by a hysteresis loop because the unloaded material traces a different path to that when it is loaded, usually referred as phase lag is recorded between the applied stress and the measured strain.…”

Section: Impact Of Testing Temperature On Cumulative Dissipated Energymentioning

confidence: 70%

Modeling the Thermal Behavior of the Viscoelastic Properties of Asphalt Concrete

Sarsam

2022

bioex

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The viscoelastic properties of asphalt concrete are susceptible to the variation in the pavement temperature. In the present work, asphalt concrete beam specimens were prepared at optimum binder content and tested under repeated flexural stresses for fatigue life. Three testing temperature were implemented (5, 20, and 30) ℃. The variation in the phase angle, dissipated energy, flexural stiffness, and permanent deformation due to the testing temperatures were monitored and modeled. It was concluded that the viscoelastic properties of asphalt concrete are highly sensitive to the variation in testing temperature. The phase angle and the permanent deformation increases sharply as the testing temperature rises. However, the dissipated energy and the flexural stiffness declines as the testing temperature rise. Mathematical models were obtained which can be implemented in identifying the thermal behavior of the viscoelastic properties of asphalt concrete.

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“…In world practice there are many types of tests with subsequent definitions of the fatigue properties under constant value of stress or deformation (Kennedy 1977;Maggiore et al 2014;Pell, Cooper 1975;Picado-Santos et al 2009;Pronk 2009;Raithby, Sterling 1972;Van Dijk 1975), for example:…”

Section: Introductionmentioning

confidence: 99%

Fatigue Resistance of Asphalt Concrete Pavements. Peculiarity and Assessments of Potentials

Лю

Shi³

et al. 2017

The Baltic Journal of Road and Bridge Engineering

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This article presents the results of research of processes of deformation and destruction of asphalt concrete pavements under cyclic loads. As the ground for such approach to estimation of the asphalt concrete properties served the proof that regardless of the composition and structure of asphalt concrete with an equal amount of elastic (viscoplastic) bonds possess the same relaxation ability. This situation is a significant feature of the behaviour of asphalt concrete, which opens the way for the development of certain approaches to the analysis of their properties, evaluation of reliability and durability. The promising methodology for the comparative assessment of fatigue and cyclic durability of asphalt concrete by exploring the complex set of elastic and viscoplastic bonds in their structure depending on the temperature, magnitude, and modes of action of the loads is proposed in the presented work. In the future, the establishment of patterns of behaviour of asphalt concretes with the same set of elastic bonds is allows to optimize compositions based on the principles of temperature-structural analogythat is relevant in studying fatigue and cyclic durability as well as low-temperature crack resistance and shear stability.

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A dissipated energy comparison to evaluate fatigue resistance using 2-point bending

Cited by 18 publications

References 2 publications

Influence of Additives on the Viscoelastic Behavior of Asphalt Concrete

Influence of Additives on the Viscoelastic Behavior of Asphalt Concrete

Modeling the Thermal Behavior of the Viscoelastic Properties of Asphalt Concrete

Fatigue Resistance of Asphalt Concrete Pavements. Peculiarity and Assessments of Potentials

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